News

With the continuous development of modern industrial technology, the harmonic pollution problem of power quality has become a challenge faced by many companies, which will affect the normal operation of the power system. A reactive compensator can help you solve harmonic governance.   What are harmonics? When the power system is affected by nonlinear loads, current or voltage waveforms with frequencies that are integer multiples of the fundamental frequency in the power system will generate harmonics. Harmonics will reduce power quality and cause some harm to equipment and systems. It will increase equipment losses. When harmonics flow through the equipment, they will generate additional heat, causing equipment overheating, increasing the failure rate, and shortening the service life of the equipment. Harmonics will increase the effective value of the current, resulting in increased line losses and reducing the overall efficiency of the power grid. The presence of harmonics may interfere with the normal operation of other electronic equipment, causing equipment failure or shutdown. Harmonics will cause additional losses in the transformer, causing it to age in a shorter time.   Reactive compensation technology is an "electricity doctor" to improve power quality In the power system, the reactive power compensators are like a professional "electricity doctor". Through accurate diagnosis and treatment, it can improve power quality and ensure the stable operation of the power grid.   The filter compensation cabinet is the "purifier" of power grid harmonics. It uses passive/active filtering technology to accurately eliminate specific frequency harmonics and control the harmonic distortion rate within the national standard.   The reactive power compensator is the "energy supply station" of the power system. By intelligently adjusting the reactive power of the system, the power supply efficiency can be improved, and the line loss can be reduced by more than 30%.   The dynamic power compensator can respond to the power grid guard in real time. It has an advanced monitoring system that can quickly respond to changes in the power grid and achieve dynamic and accurate compensation.   How does the reactive power compensator improve the power system? The harmonic filtering function can eliminate the harmonic components in the power grid, reduce THD, and improve the quality of power.   The intelligent compensation device can dynamically adjust the reactive power according to the real-time changes of the power grid load, keep the power grid voltage within a reasonable range, and prevent power quality fluctuations.   By compensation power, the compensation cabinet can optimize the power factor and improve the overall operating efficiency of the power system. The reactive compensator can reduce the harmonic current in the conductor, reduce line loss, and transmission costs.

The production of stainless steel plates adopts the cold rolling mill process, in which cold-rolled stainless steel is mainly produced by the rolling method. Plate rolling is suitable for the mass production of thicker steel plates or the trial production of new steel grades.   The production process of cold-rolled stainless steel strips includes heat treatment, pickling, grinding, leveling, cross-cutting, sorting, cleaning, and packaging. To achieve efficient and high-precision rolling, a cold cluster mill with good rigidity is used. Multi-roll cold rolling mills generally adopt a single-machine reversible rolling method. To improve the yield rate, lead strips are welded at both ends of the stainless steel strip before rolling, and the lead strip part is not rolled. Stainless steel strips need to be annealed before cold rolling, during cold rolling, and after the finished rolling. Cold-rolled stainless steel strips have strict requirements on surface quality, and some elimination and protection measures need to be taken, such as annealing, pickling, degreasing, etc. The finishing requirements of stainless steel strips are relatively special, and a strong straightening machine is required for straightening. Different straightening methods are used according to the products of different thicknesses.   The production processes of cold-rolled stainless steel strips include the type of cold rolling mill, friction coefficient, front and rear tension, rolling speed, and rollers. The type of cold rolling machine requires the use of a rolling mill with greater rigidity, and a cold cluster mill has more advantages than a 4 hi cold rolling mill. By using rolling lubricants to reduce the friction coefficient of the contact surface between the roller and the steel strip, and cooling the rollers and steel strips, the overall friction coefficient of the production line can be effectively reduced. The front and rear tensions affect the rolling pressure, and cold-rolled stainless steel strips require greater tension. Changes in rolling speed will affect the friction coefficient between the roller and the steel strip, and affect the rolling pressure and the thickness of the steel strip. The rollers need to have high hardness, strength, and wear resistance, and also have a certain toughness. The reduction system includes the adjustment of rolling passes, reduction amount, and rolling process, which is determined according to the characteristics of the rolling mill and product requirements. Plate shape control It can mainly roll out strip steel with uniform transverse thickness and flat plate shape, which is achieved by adjusting the shape of the roller gap. Whether the thickness control is good or not depends on whether the cold rolling precision is high or not, which is mainly achieved through automatic thickness control devices.

In the wave of global energy transformation, solar energy, as a clean and renewable energy source, is gradually becoming an important part of the future power supply. With the continuous advancement of technology and the continuous reduction of costs, more and more homes and businesses are beginning to install solar power generation systems. How to ensure that these green energy sources can supply power efficiently and stably, especially in the face of complex and changing grid needs, has become a topic worth discussing. This article will unveil the mystery of the "Power Compensation Device" for you, especially its application in optimizing solar energy production, so that you can easily understand and master this key technology. 1. Challenges of solar power generation: the dual test of efficiency and stability Although solar power generation is environmentally friendly, its output power is seriously affected by natural factors such as weather and time, and has significant intermittent and instability. This characteristic has brought unprecedented challenges to the power grid. When there is insufficient sunlight or no light at night, the amount of solar power generation drops significantly, which may lead to problems such as grid voltage fluctuations and reduced power quality. Therefore, how to improve the utilization efficiency of solar energy while ensuring the stability of power supply has become an urgent problem to be solved in the industry. 2. Reactive Power Compensators: the "stabilizer" of solar power generation What are Reactive Power Compensators? As the name implies, a reactive Power Compensation Device is a device used to compensate for reactive power in the power grid. In the power system, although reactive power does not directly do work like active power, it is crucial to maintain the stability of the grid voltage and improve the quality of power. Simply put, the reactive power compensator is like a "regulating valve" for the power grid, which ensures that the power grid operates in the best state by dynamically adjusting the output of reactive power.     How Low Voltage Compensation Works Explained The working principle of the Reactive Power Compensation Device is based on power electronics technology. By detecting the reactive power demand in the power grid, its output is automatically adjusted to compensate for the reactive power shortage in the power grid. This includes increasing or decreasing capacitive or inductive reactive power, thereby maintaining the stability of the grid voltage and optimizing the power factor. In the solar power generation system, due to the volatility of solar energy output, the role of the reactive power compensator is particularly important. It can effectively alleviate the impact on the power grid caused by the instability of solar power generation. 3. Why does solar power generation need Reactive Power Compensators? Improve power quality After the solar power generation system is connected to the power grid, power quality problems such as harmonics and voltage fluctuations may be introduced. Reactive power compensators can significantly improve power quality and reduce interference to the power grid and other electrical equipment by accurately compensating for reactive power. Enhance system stability When the solar power generation fluctuates greatly, the reactive Dynamic Compensation Device can respond quickly and adjust the reactive output to help the power grid maintain voltage stability and prevent equipment damage or system collapse caused by voltage fluctuations, thereby enhancing the stability of the entire power system. Improve economic benefits By optimizing the power factor and reducing the flow of reactive current in the power grid, the Reactive Power Compensators can also effectively reduce line losses and improve power transmission efficiency. This is particularly important for large-scale solar power stations because it can directly increase power generation and economic benefits.   4. How to Choose Voltage Compensation Cabinets Reactive Power？ Consider system scale and demand Choose a reactive power compensator of appropriate capacity according to the scale and specific needs of the solar power generation system. Generally speaking, the capacity of the compensator should be slightly larger than the maximum possible reactive power demand of the system to ensure a sufficient adjustment margin. Pay attention to technical performance indicators When choosing, you should pay attention to key technical indicators such as the response speed, compensation accuracy, and harmonic suppression capability of the compensator. Fast response can better adapt to the volatility of solar power generation, and high-precision compensation can more effectively improve the quality of power. Consider compatibility and scalability Ensure that the selected compensator is compatible with the existing solar power generation system and other power equipment, while considering future expansion needs, and choose products with certain flexibility and upgrade space. Brand and after-sales service Choosing products from well-known brands usually means higher quality assurance and a complete after-sales service system. When encountering technical problems or requiring maintenance, you can get timely and effective support. 5. Filter compensation cabinet installation guide and maintenance • Professional installation: In view of the complexity of the power system, it is recommended that a team with professional qualifications install the reactive power compensator to ensure safety and compliance. • Regular inspection: Regularly inspect and maintain the compensator, including cleaning, tightening wiring, checking heat dissipation, etc., to ensure its long-term stable operation. • Monitoring and adjustment: Use intelligent monitoring systems to track compensation effects in real time, and adjust compensation strategies on time according to actual conditions to achieve optimal operating conditions. 6. Future Outlook: Intelligence and Integration With the development of technologies such as the Internet of Things and big data, future reactive power compensators will be more intelligent and integrated. They can not only automatically adapt to changes in solar power generation, but also work in conjunction with other smart grid equipment to achieve more efficient and flexible power management. At the same time, modular design will make compensators easier to install, maintain, and upgrade, further reduce costs, and promote the popularization and development of solar power generation. As a key tool for optimizing solar energy production, reactive power compensators play an irreplaceable role in improving power quality, enhancing system stability, and improving economic benefits. Through reasonable selection, correct installation and maintenance, and keeping up with technological development trends, we can make better use of this "green stabilizer" and contribute to building a cleaner, more efficient, and reliable power future. Let us move forward hand in hand, under the shining of solar energy, to create a better tomorrow!

As solar power generation systems become more popular, maximizing power generation efficiency has become a focus of many owners and operators. Reactive power compensators are a cost-effective solution that can significantly improve the power generation quality and grid stability of photovoltaic power plants. This article will provide you with a detailed introduction to the working principle of reactive power compensation, its practical application in solar systems, and the key considerations for selecting a Compensation Device. Basic principles of reactive power compensation Reactive power is different from the actual power (active power) we use in daily electricity. It is a part of power used to establish an electromagnetic field in an AC circuit. Although it does not do actual work, reactive power is essential to maintaining grid voltage stability. In a solar power generation system, devices such as inverters and transformers will generate reactive power requirements. When the reactive power in the system is insufficient, it will cause problems such as voltage drop, equipment heating, and increased line losses, which directly affect the power generation efficiency. Reactive power compensators help maintain system voltage stability and reduce line losses by providing or absorbing reactive power, thereby improving overall power generation efficiency.     Applications of Reactive Power Compensation Devices in Solar Energy Systems Photovoltaic power stations are usually located at the end of the power grid, and long-distance transmission lines themselves have reactive power loss problems. The intermittent characteristics of solar power generation (affected by weather and sunshine) increase the risk of voltage fluctuations in the power grid. A reasonable configuration of the reactive Power Compensation Device can: 1. Improve power factor: Increase the power factor from 0.8 to above 0.95, and reduce line losses by up to 30%. 2. Stabilize voltage level: The Compensation Device can quickly respond to voltage fluctuations and maintain the system voltage within a reasonable range of ±5%. 3. Reduce equipment capacity requirements: The optimized system can reduce the capacity configuration of equipment such as transformers and cables, saving initial investment. 4. Avoid grid fines: Many regions charge additional electricity fees to enterprises with power factors below the standard value, and the Compensation Device can avoid such expenses.     How to Choose Voltage Compensation Cabinets  Common reactive Power Compensation Device on the market include static VAR compensators (SVCs), static synchronous compensators (STATCOMs), and smart capacitor banks. The following factors should be considered when selecting a Compensation Device suitable for a solar energy system: 1. Response speed: The output of photovoltaic power generation changes quickly, and a Dynamic Compensation Device with a millisecond response is required. 2. Compensation accuracy: The ability to accurately adjust reactive output according to real-time needs. 3. Environmental adaptability: Outdoor installations need to consider environmental factors such as temperature, humidity, and dust prevention. 4. Harmonic suppression capability: Devices with filtering functions can further improve power quality. 5. Scalability: Modular design facilitates future system expansion. For small and medium-sized distributed photovoltaic projects, smart capacitor banks are the first choice because of their high cost-effectiveness and simple maintenance; large ground power stations use more dynamic compensation Dynamic Compensation Solutions for Electrical Systems such as SVC or STATCOM.   Installation and maintenance recommendations The installation location of the reactive Power Compensation Device should be as close to the load center as possible. It is usually recommended to: • Centralized compensation: Install on the low-voltage side of the substation. • Group compensation: Install near large electrical equipment. • On-site compensation: Direct compensation for particularly large single equipment Daily maintenance mainly includes: • Regularly check whether the capacitor has bulging and leakage. • Monitor whether the Compensation Device is switched on and off normally. • Clean the heat dissipation holes to ensure good ventilation. • Record the change of power factor and evaluate the compensation effect. Although the reactive Power Compensation Device is not the most eye-catching part of the solar energy system, it is a key link to improve power generation efficiency and ensure grid stability. With the continuous increase in photovoltaic penetration and the increasingly stringent requirements of the power grid on power quality, the reasonable configuration of Reactive Power Compensators will become the standard configuration of solar power stations. It is recommended that owners consult professional power designers when choosing compensation plans, customize the best solution according to the characteristics of specific projects, and give full play to the potential of solar power generation systems.

In the context of today's energy transformation, photovoltaic energy systems are gradually becoming the core of renewable energy. However, photovoltaic systems have problems such as low power factor and severe energy loss during operation, which hurt their overall efficiency. In this context, various types of Compensation Device equipment have emerged, among which dynamic compensation devices are particularly important. This article will discuss how a dynamic Power Compensation Device can improve the efficiency of photovoltaic energy systems.   How Dynamic Reactive Compensation Works The Dynamic Compensation Device is a device that improves the quality of electric energy by real-time monitoring and adjusting the power factor of the power grid. Its working principle is mainly to actively adjust the reactive power to match the actual load demand of the photovoltaic system, thereby improving the stability and efficiency of the system operation.     The role of Power Compensation Device In photovoltaic energy systems, power compensation devices play a vital role. They can compensate for reactive power generated by load fluctuations in real time, thereby improving the power factor of the power grid. A good power factor can not only reduce power loss but also reduce electricity costs and equipment failure rates, thereby extending the service life of photovoltaic modules.   Necessity of Reactive Power Compensators In photovoltaic systems, the use of Reactive Power Compensators can significantly improve the quality of power. These devices can effectively cope with the reactive power fluctuations caused by load changes in the network, ensuring that the photovoltaic system always maintains efficient operation under different load conditions. By properly configuring reactive power compensators, the overall capacity of the photovoltaic power generation system can be improved, bringing higher economic benefits to users.     Benefits of Dynamic Reactive Power Compensation 1. Real-time response: The Dynamic Compensation Device has a fast response capability and can adjust the compensation level instantly when the grid conditions change to maintain a good power factor. 2. Improve stability: Since the power generation output of the photovoltaic system is affected by external factors such as weather, the Dynamic Compensation Device can effectively balance these changes and improve the stability of the system. 3. Save costs: By reducing reactive power fluctuations and reducing power losses, it saves a lot of electricity bills for enterprises and users, reflecting extremely high economic value. 4. Improve grid connection capability: Effectively manage reactive power, improve the grid connection capability of photovoltaic systems and power grids, and enable photovoltaic systems to be connected to the power grid more stably.     With the continuous development of photovoltaic energy technology, improving system operation efficiency has become an inevitable trend. As an effective tool to improve the efficiency of photovoltaic energy systems, the Dynamic Compensation Device brings significant economic and environmental benefits to users by optimizing power factor and reducing energy loss. In the future development of photovoltaics, the Dynamic Power Compensation Device will undoubtedly play a greater role in promoting the popularization and application of clean energy. In short, paying attention to the Applications of Reactive Power Compensation Devices will be an important part of the photovoltaic energy field that cannot be ignored, and it provides strong support and guarantee for achieving the goal of sustainable development.

According to the latest data from MIR DATABANK, the top 10 sales of China's low-voltage inverter market in 2024 are: Inovance Technology, ABB, Siemens, Danfoss, INVT, Delta, Schneider, VEICHI, Mitsubishi Electric, and Yaskawa Electric. Data source: MIR DATABANK 01 In 2024, the scale of China's low-voltage inverter market will drop below 30 billion yuan for the first time According to MIR DATABANK data, the scale of China's low-voltage inverter market in 2024 is about 28 billion yuan, a year-on-year decrease of 7%. It has exceeded 30 billion yuan for three consecutive years since 2021, and fell below 30 billion yuan for the first time in 2024. Looking ahead, it is expected that the scale of the low-voltage inverter market will continue to decline in 2025, but the decline will be smaller. In addition, the recent instability of Sino-US tariff policies will lead to an increase in the export cost of China's low-voltage inverters and intensified market competition, but this will also accelerate domestic substitution and prompt companies to actively expand into emerging markets. China's low-voltage inverter market size and forecast from 2020 to 2027 (million RMB)   Data source: MIR DATABANK Demand side: In 2024, the demand for most downstream industries of low-voltage inverters will decline, especially in sectors strongly related to real estate, such as elevators and lifting machinery, which together account for 15% of the overall industry, and the decline is more obvious. Livelihood-related industries have rebounded due to exports, such as food and beverage, textiles, packaging, and other industries, which together account for 12% of the overall industry, with an increase of about 2-5%. Some project-based industries have benefited from policies encouraging equipment renewal and technological transformation, and increased investment, such as chemical, mining, petrochemical, and other industries, which together account for about 11% of the overall industry, driving the growth of some markets. Supply side: Low-price competition strategy: The current market shows a trend of low prices, and various domestic companies have implemented "low-price strategies". In this context, facing the squeeze of domestic (including Hong Kong, Macao and Taiwan) manufacturers and the overall sluggish market environment, some European and American manufacturers have adopted dual response measures: on the one hand, they lowered product prices to cope with price wars, and on the other hand, they launched Chinese localized products to meet the needs of Chinese local customers. At the same time, Japanese and Korean brands are squeezed by domestic and European and American brands, and their competitive advantages are not obvious. To change this situation, some Japanese and Korean manufacturers launched a second brand in 2024 to further strengthen their localization layout in the Chinese market. Overall solution strategy: In the fierce market competition for low prices, many domestic manufacturers regard "providing customers with overall solutions" as an important strategy to enhance brand competitiveness, in order to cope with the situation of a low-price volume market of various manufacturers. Industry layout: Engineering inverters have become the focus of attention of various manufacturers in the past two years. Many manufacturers have laid out project-based industries and actively expanded their market share to enhance their competitiveness. Future opportunities: Data center: With the gradual implementation of super-large data centers and intelligent computing center projects, it is expected that the construction demand for data room air conditioning systems will increase significantly, thereby effectively driving the sales growth of supporting low-voltage inverters. Shipbuilding industry: Driven by the national energy-saving and environmental protection policies, the shipbuilding industry has developed rapidly and is expected to drive the continued growth of inverter demand in the future. 02 The localization rate exceeded 40%, and Huichuan ranked first The localization rate of China's low-voltage inverter market was less than 40% from 2021 to 2023, but it has been steadily increasing. In 2024, the localization rate exceeded 40% for the first time. From the perspective of manufacturers' performance, domestic manufacturers have continued to seize market share with their strong competitiveness, which has caused the market share of European, American, Japanese, and Korean manufacturers to drop by about 1%. Proportion of Chinese low-voltage inverter manufacturers by type in 2023-2024 – Sales Data source: MIR DATABANK Domestic manufacturer - Inovance Technology: In 2024, Inovance will become the first in China's low-voltage inverter market for the first time. Based on the market strategy, Inovance adjusted its organization, strengthened the "battle zone operation" mode, and adopted the "industry + battle zone" collaborative operation mode. Through the battle zone operation mode and with the help of channel power, Inovance has penetrated the segmented product clusters and individual customer groups in the regional market, and successfully seized many customers and market share with system solutions and high-quality services. European and American manufacturers- Siemens: Focus on the needs of the Chinese market and develop a localization layout. Release 18 new products: On March 25, 2025, Siemens held the "China Acceleration 2.0" innovation product launch conference, at which 18 new industrial automation and digitalization products for the Chinese market were launched at one time. Among them, 16 products were developed in China, covering low-voltage inverters (SINAMICS V20 3AC 400V), PLC (S7-1200 G2++), servos (SINAMICS S200/B/C), and other categories. Behind the new products, Siemens' organizational structure has also changed: in October 2024 (the first quarter of Siemens' new fiscal year in 2025), Siemens established the China Innovation Products Division (CNP). Compared with the 2024 fiscal year, Siemens increased its R&D investment by 67% for the research and development of localized products in China, and plans to launch new products and solutions on a quarterly basis. The 18 new products launched at one time are the first batch of results of the plan. Siemens has also strengthened its local supply chain: On March 24, 2025, the new factory of Siemens Electromechanical Technology (Jiangsu) Co., Ltd. was officially put into operation. The factory is mainly responsible for the production of motors and drive equipment, and its products will not only supply the Chinese market, but also be exported to more than a dozen countries and regions. Japanese and Korean manufacturer - Mitsubishi Electric: In 2024, Mitsubishi Electric launched the localized brand "Lingling" to cope with the fierce competition in the domestic market with a localization strategy. The Lingling brand is precisely positioned in the mid-to-low-end market. Mitsubishi Electric hopes to compete head-on with domestic brands in the mid-to-low-end market through this brand and regain the previously lost market share. At present, Lingling brand products are mainly concentrated in the fields of inverters, servo motors, input and output modules (IO), etc.

As the US continues to increase tariff barriers on Chinese cold-rolled steel and its products, the domestic cold-rolled steel processing automation equipment industry is setting off a collective transformation of the "Southeast Asia strategy". The latest industry data shows that China's exports of Cold rolled stainless steel production equipment to Southeast Asia in the first half of 2024 surged 45% year-on-year, becoming a bright spot in the foreign trade environment. Market reconstruction under the tariff stick The latest tariff list of the US Department of Commerce shows that Chinese-made Automated cold rolling mill for stainless steel is included in the 25% punitive tariff range, which directly led to a 62% year-on-year drop in exports to the US from January to May this year. "We originally had 30% of our production capacity for the US market, and now we must urgently turn." The foreign trade director of a leading enterprise in Guangdong revealed. In sharp contrast, the Southeast Asian market is experiencing explosive growth. After the RCEP, Vietnam, Indonesia, and other countries generally reduced import tariffs on cold-rolled equipment to below 5%. According to statistics from the China Chamber of Commerce for Import and Export of Mechanical and Electrical Products, in the first quarter of 2024, China's exports of cold rolling equipment to ASEAN reached US$870 million, exceeding 60% of last year's total amount. Industrial chain transfer creates new opportunities Five brand-new High-efficiency stainless steel processing lines are being installed simultaneously in the China-invested Industrial Park in Haiphong City, Vietnam. "These are all prepared to take over the orders for automobile plates transferred from China." The project leader said that the park alone purchased 230 million yuan worth of Chinese-made intelligent rolling mills. Industry experts pointed out that three major demand hotspots are forming in Southeast Asia: Vietnam: Demand for automobile plate processing equipment increased by 35% annually Indonesia: Concentrated release of stainless steel cold rolling line transformation projects Thailand: High-end home appliance plate production line upgrade trend Intelligent green equipment has become the focus of competition Facing strong competition from Japanese and Korean companies, Chinese manufacturers are breaking through with a combination of "intelligent + green". Jiangsu Yuanjing Automation's latest hydrogen-assisted rolling system has received batch orders from Thailand's new energy vehicle supply chain. Market research shows that the premium capacity of intelligent models with remote operation and maintenance functions is 20-25%, and they are rapidly seizing the mid-to-high-end market. In the newly signed contracts in 2024, the proportion of smart devices has jumped from 28% last year to 42%. Concerns and challenges coexist However, this new blue ocean also hides reefs. Indonesia's recent requirement of "40% local content" has led to the delay of several projects under construction. The Vietnam Chamber of Commerce and Industry warned that a special sales tax may be imposed on imported equipment. "The most troublesome thing now is the payment period." The Southeast Asia manager of a Zhejiang equipment supplier admitted, "Local customers generally require a 9-month payment period, and the financial pressure is three times that of domestic customers." Future Outlook: Intelligent Competition Accelerates Industry forecasts show that the Southeast Asian Cold rolled stainless steel processing machinery market will maintain an average annual growth rate of 18% from 2024 to 2026, and the scale will exceed US$3.5 billion by 2026. With the deepening implementation of the Regional Comprehensive Economic Partnership Agreement (RCEP), Chinese equipment suppliers are expected to obtain more than 60% of the market share. But experts also reminded that as Japanese and Korean companies accelerate their localization efforts, market competition will enter a white-hot stage after 2025. "The key to success in the future will be who can leap from 'equipment export' to 'standard output' faster," said a relevant person in charge of the China Iron and Steel Association.

I. Policy background and scope of impact Since 2018, the United States has imposed a 25% tariff on imported steel ("Section 232") and continued to strengthen trade protection measures. In 2024, the Biden administration will further expand the scope of tariffs on China, and some cold-rolled steel and downstream automation Equipment for Cold Rolling stainless steel will face an additional 10-25% tariff barrier. This move directly affects the global steel supply chain and the export pattern of Cold Rolling equipment. II. Impact on the cold rolling automation equipment industry Rising export costs and frustrated competitiveness The export cost of cold rolling mill equipment for steel industry (such as rolling mills and control systems) manufactured in China to the United States has increased by 15-30%, weakening its price advantage. Some US customers have turned to Korean and German suppliers, resulting in the loss of orders from domestic manufacturers. It is expected that exports to the United States will drop by 20-25% in 2025. Supply chain reconstruction is accelerating The United States promotes "Friend-shoring", and cold rolling equipment manufacturers need to set up factories in Mexico and Southeast Asia to avoid tariffs. Companies such as Yuanjing Automation may consider building joint ventures with local partners (such as Mexican Industrial Group) to take advantage of the zero tariff policy of USMCA (United States-Mexico-Canada Agreement). Technical standard thresholds raised The United States has strengthened its "Buy American" policy, requiring the localization rate of equipment purchased for federal projects to be ≥55%, forcing Chinese companies to adjust their supply chains. Investment in US UL, ASME, and other certifications needs to be increased, and compliance costs are expected to rise by 8-12%. III. Structural impact on steel demand US domestic steel supply and demand dynamics Short-term inhibitory effect: High tariffs push up cold-rolled steel prices (+10-15%), resulting in increased cost pressure on automobile and home appliance manufacturers, and demand growth may slow to 1.5% in 2024 (originally predicted 2.3%). Long-term capacity substitution: US steel mills are accelerating the expansion of electric arc furnace (EAF) capacity, and the self-sufficiency rate of cold-rolled steel may increase to 75% in 2025, with reduced dependence on imports. Adjustment of global trade flows Affected by tariffs, China's cold-rolled steel exports have shifted to Southeast Asia and the Middle East, with exports to ASEAN increasing by 18% year-on-year in 2024. Due to the carbon tariff (CBAM) and US barriers in markets such as the EU, Japan, and South Korea, the proportion of high-value-added "green steel" trade is expected to increase to 30% (2025). Chain reaction in downstream industries Automotive industry: US automakers have turned to local procurement, but overseas production bases such as Mexico and Thailand still rely on imported equipment, forming regional demand differentiation. New energy industry: The cold rolled stainless steel market trends for wind power and photovoltaic brackets have increased (expected to increase by 12% in 2025), partially offsetting the decline in traditional industries. V. Future Outlook From 2025 to 2030, the US tariff policy may continue to be high-pressure, but emerging markets (India, ASEAN) and green steel demand will provide new growth points. The cold rolling automation equipment industry needs to accelerate its transformation towards high-value-added and low-carbonization, while hedging trade risks through global capacity layout.

The global cold-rolled steel industry is currently in a critical stage of intelligent upgrading and green transformation. This trend has a multi-dimensional impact on our export business. The main opportunities and challenges are analyzed as follows: 1. Incremental opportunities in emerging markets Southeast Asia/India market expansion With the restructuring of the global industrial chain, Southeast Asia and India are accelerating the formation of automotive and home appliance manufacturing industry clusters. Data shows that the demand for Cold Rolling steel in the region will maintain an annual compound growth rate of 4-6% from 2024 to 2025, directly driving a surge in demand for production line construction. Our company can focus on the equipment replacement window period in Vietnam, Thailand, and other countries in the field of new energy vehicle steel. RCEP policy dividends (1) Tariff advantage: After the implementation of the agreement, the tariff on core components such as Cold Rolling Mill frames exported to Indonesia/Malaysia will be reduced from 8% to 3%, driving the price of the whole machine down by 5-8%, significantly enhancing the bidding competitiveness. (2) Standard coordination: ASEAN countries have accelerated the adoption of China's GB standard, reducing our equipment transformation costs by about 15%. (3) Cooperation model innovation: Through cooperation with local partners such as Indonesian PT companies, we can build Advanced stainless steel rolling technology solutions and use the rules of origin cumulation to maintain a gross profit margin of 18-22%. 2. Steel demand in developed economies will be affected by the trade environment In developed economies, steel demand will show a "first rise and then fall" trend from 2021 to 2022. Driven by the post-epidemic economic recovery, demand rebounded in 2021, but returned to weakness in 2022 against the backdrop of high inflation and tight monetary policy. The increase in demand brought by the US "Infrastructure Act" was partially offset by the overcapacity caused by the return of manufacturing, and the average annual growth rate is expected to remain at around 0.5% from 2023 to 2025. The implementation of the EU Carbon Border Tax (CBAM) has prompted the steel industry to accelerate its green transformation. From 2024, the proportion of electric arc furnace steel will exceed 45%, but the overall demand growth is limited due to energy costs. Japan and South Korea are facing the dual pressures of deteriorating population structure and industrial relocation. Demand may fall back to 90% of the pre-epidemic level in 2025. Emerging markets are showing obvious differentiation: India, relying on the expansion of manufacturing PMI and infrastructure investment, will see its cold rolled stainless steel market trends growth rate jump to more than 6% from 2023, and is expected to become the world's second-largest consumer in 2025. ASEAN countries benefit from the transfer of the industrial chain, and the demand for automobiles and electronic steel continues to increase, and will maintain a compound growth rate of 4-5% from 2024 to 2025. Latin America and Africa are constrained by the debt crisis and exchange rate fluctuations, and demand has fluctuated in a "sawtooth" shape, but special steel imports continue to increase, driven by new energy projects. The global steel trade pattern is being reshaped: the energy reconstruction caused by the Russian-Ukrainian conflict in 2023 has prompted the construction of multiple direct reduced iron projects in the Middle East, and the region may become a new net export pole in 2025. Under the carbon tariff system, the "green steel" premium continues to expand, and the low-carbon steel trade volume is expected to account for 30% of the global total in 2025. China's capacity replacement and environmental protection production restrictions have promoted the rebalancing of global supply and demand. After 2024, the profit margin of overseas steel mills is expected to be restored to a reasonable range of 8-10%. 3. Risk response suggestions Logistics optimization: Set up overseas warehouses in Vietnam to shorten the delivery cycle in East Asia to within 45 days; Risk hedging: Insure export credit insurance for high-risk markets such as Russia and South America, with a coverage rate of not less than 85%. Technical pre-research: Set up a special fund to carry out low-carbon equipment research and development, and complete the certification of all products that meet CBAM standards by 2025. 4. Trend prediction and strategic suggestions The global cold rolled stainless steel market trends are showing three major changes: the Middle East has become a new net export pole, the proportion of "green steel" trade has risen to 30%, and the profit margin of overseas steel mills has been restored to 8-10%. Suggestions for our company: Focus on the India-ASEAN growth pole, and achieve 40% of revenue in this region by 2025; Establish a rapid response mechanism for technical compliance, and reserve 15% of the flexible R&D budget to respond to regulatory changes. Explore cooperation opportunities with the Middle East direct reduced iron project to form a new profit growth point.

The Cold Roll Mill consists of left and right coilers, a leading engine arch, a press cylinder, and other auxiliary equipment, with a maximum design speed of 480m/min. The Cold Reversing Mill electrical system adopts Siemens PLC S7-1500 control and supports PROFINET/DP communication, and the transmission system is equipped with a high-performance AC vector inverter to meet the needs of high-precision speed and tension control. The AGC thickness control system integrates monitoring, pre-control, second flow, acceleration and deceleration thickness compensation, and tension AGC functions to ensure the high-precision requirements of finished plates. Precise tension control is achieved through the tension sensor between the racks, the automation system completes sequential control and continuous adjustment, the human-machine interface supports real-time monitoring, fault diagnosis, and online monitoring, and is equipped with multiple safety interlocks to ensure safe operation. In addition, the full medium-voltage variable frequency drive system of the double-stand Tandem Cold Mill reduces the energy consumption of rolling per ton of steel, which is more energy-efficient than DC transmission. With 70% of the investment of two single Cold Rolling Mills, the same production capacity is achieved, reducing equipment investment and operating costs; fewer people are allocated in shifts, further reducing labor costs. AGC thickness control and tension control ensure the thickness accuracy of finished plates and improve product quality.  

The Cold Rolling Mill consists of left and right coilers, the main machine arch, a press cylinder, and other auxiliary equipment. The maximum design speed is 400m/min. Automatic control greatly improves production efficiency. The Cold Reversing Mill electrical system adopts Siemens PLC S7-1500 control and supports PROFINET/DP communication, and the transmission system is equipped with a high-performance AC vector inverter to meet the needs of high-precision speed and tension control, reduce energy consumption and maintenance costs, and extend the service life of the Cold Roll Mill. The AGC thickness control system integrates monitoring, pre-control, second flow acceleration, and deceleration thickness compensation functions to achieve high-precision thickness control and ensure the high-precision requirements of finished plates. The Tandem Cold Mill has automatic sequential control and continuous adjustment control functions. The intelligent human-machine interface simplifies the operation process, supports process parameter setting and real-time monitoring, and dynamically displays the production process, fault diagnosis, and online monitoring information to reduce the difficulty of operation. It is equipped with multiple safety interlock designs to ensure the safety of equipment operation and operators.

The equipment consists of a sawing unit, roller table, material rack, trolley, gantry, and material platform, which can accurately see materials according to the set length. The gantry mechanism automatically stacks the sawn materials through the internal lifting platform and clamp and finally transports them to the designated location by the crane, which can reduce manual intervention and improve production efficiency. The electrical system is controlled by Siemens PLC S7-1200, which supports Profinet bus communication, and the transmission system uses Siemens SINAMICS G120 series inverter to achieve efficient and precise control. PLC and variable frequency transmission systems ensure cutting length and stacking accuracy, reducing material waste. The equipment has sequential control, continuous adjustment control, positioning control, and stacking sequence control functions. The human-machine interface is intuitive and easy to use, supports process parameter setting and storage, and simplifies the operation process. Real-time display of dynamic process, fault diagnosis, and online monitoring information, and equipped with multiple safety protection interlocks to ensure the safe operation of the equipment. Automatic control reduces labor costs, and precise cutting reduces material loss. Our company has successfully obtained certification for its main products (document number ISO90013C) and developed several patents, including electric transmission and control systems for rolling mills and annealing production lines. We specialize in Dynamic Reactive Compensation Device， Cold Rolling Mill， Smooth Machine Unit， Finishing Machine And Straightening Unit, Continuous Annealing And Acid Washing Line.

In November 2024, the Guohui Color Coating Line equipped by our company was successfully debugged in Zhongshan. The Coating Line equipment structure consists of an unwinder, a stitching machine, a cleaning unit, a tension roller unit, a looper unit, an oiling unit, a curing furnace, and a winder. The unit is designed to have a maximum process speed of 30m/min. The electrical system uses S7-1500 series products and PROFINET/DP communication. The Coil Color Coating Line unit has an inlet and outlet looper unit to store materials, which can realize non-stop loading and unloading of materials. The PLC control system is equipped with a human-machine interface, and a 15-inch color touch screen is selected to be configured at the entrance and exit console. AC transmission is used to reduce maintenance costs. Basic automation is directly oriented to the production process, completing the sequential control and continuous adjustment control of the production process, and the computer realizes the human-machine interface program control; the operation screen, dynamic process screen display, including fault display, fault diagnosis, and online monitoring and other functions, is equipped with multiple safety protection interlocks to achieve safe operation. The Roller Color Coating Line can provide customers with efficient, stable, and safe production solutions, solve production problems for customers, and help achieve cost reduction, efficiency improvement, and high-quality production.

In April 2024, the Gaoming Jiye No. 4 straightening machine equipped with an electric drive, AGC control, and dynamic filter compensation device by Yuanjing Automation Equipment Co., Ltd. was successfully commissioned on-site thanks to the hard work of after-sales colleagues.    The Gaoming Straightening And Finishing Machine is a set of efficient and precise strip processing equipment consisting of an unwinder, stitching machine, tension roller group, Stretcher Leveling, leveling machine, looper/elevator, oiling machine, and winding machine. The maximum process speed of this equipment can reach 300 m/min. It adopts the PLC S7-1500 control system and Profinet bus communication, combined with AC transmission technology, which significantly reduces maintenance costs. Through the mechanical differential mechanism, the elongation can achieve infinitely continuous adjustment of 0-3.0% to meet the processing requirements of different materials. This Tension Leveler can effectively solve the common problems of flatness and elongation control in customers' strip processing processes and improve product quality. Its automatic control system has the function of automatic deceleration and parking at a fixed length and fixed coil diameter to ensure production accuracy and efficiency. At the same time, the Straightening Equipment supports rewinding, straightening, leveling, and joint control modes to meet various process requirements. The five-element six-heavy bending roller system design, combined with the role of the tension roller and straightening roller, can produce tensile stress exceeding the yield limit of the strip, further improving the material performance. In addition, the Straightening Press is equipped with a human-machine interface that supports dynamic process display, fault diagnosis, and online monitoring to ensure operational safety and production stability. The Gaoming Finishing Machine and Straightening Unit brings significant economic benefits and competitive advantages to customers by optimizing production processes, improving product quality, and reducing maintenance costs.