After several months of hard preparations, on June 23, 2014, our company obtained the "Certificate IV for Installation (Repair, Test) Power Facilities Permit" issued by the Central China Regulatory Bureau of the National Energy Administration. The acquisition of the qualification certificate indicates that our company can undertake the installation, maintenance and testing of power transmission, power supply, and power facilities below 35 kV (including 10KV). It will enable our company's technical strength and corporate image to be further understood and recognized by the industry, and it will also add a heavyweight to our company's participation in external competition. In April 2014, the IP67 integrated vehicle-mounted electric air-conditioning compressor controller developed by our company was commissioned with the scroll electric air-conditioning compressor produced by the company in the laboratory of the largest automobile air-conditioning compressor manufacturer in China. . Participating in the on-site commissioning are world-renowned technical experts in the field of automotive air conditioning from Germany and domestic refrigeration compressor industry experts. After 10 days of complicated and demanding tests and experiments such as pressure resistance, overcurrent, IP67 waterproof, high temperature, low temperature, missing items, locked rotor, vibration, noise resistance, energy efficiency ratio, etc., the IP67 integrated type developed by our company was unanimously recognized The on-board electric air-conditioning compressor controller has reached or even partially exceeded the performance indicators of European high-end automotive air-conditioning controllers. German experts excitedly picked up our company’s engineer Yang Sheng and shouted: "Good engineer! Good! Very good!". The technical experts of a world-famous automotive air-conditioning manufacturing company on site have made it clear that the compressor system tested this time will be used to replace the currently purchased compressor system of a famous European brand, and an order for 20 units will be signed on site. This indicates that our controller technology has reached the world's leading level, and will be used in the world's top luxury cars in the future, and has a place in the European, American and even the world's markets!

　　The demand for energy conservation, environmental protection, and low-carbon economy has promoted the development of electric vehicles; the development of electric vehicles has awakened the development of new electric air-conditioning systems; the improvement of new electric compressor systems has promoted the modification of air-conditioning systems for fuel-fuel vehicles. In this context, The vehicle-mounted electric air-conditioning compressor controller series products developed by our company are new energy-saving control devices suitable for electric air-conditioning systems of new energy vehicles such as solar energy and electric energy and ordinary fuel vehicles. It has entered the mass production stage and is constantly developing a variety of Controllers with stronger models of applicability have broad market prospects.

　　45% of the air pollution in the world’s large and medium-sized cities comes from vehicle exhaust generated during the operation of fuel vehicles, and 70% of which comes from exhaust emissions generated when vehicles are parked. The exhaust emissions of a fuel vehicle at low speed and parking are 2.5-5 times that of normal high-speed operation. If a mechanical air-conditioning compressor driven by a traditional engine is used as the power source of the air-conditioning compressor, a partial replacement design is required. The replacement of the electric vehicle air-conditioning system driven by a DC motor solves its refrigeration function when parking. It can automatically stop the engine during short-term or long-term parking, but the air-conditioning system can work normally, which can reduce the overall air pollution emissions by 30%. . Installing a new type of electric compressor system on traditional fuel vehicles can not only facilitate the driver’s parking and rest, but also save energy and reduce emissions. It has become a popular direction in the current fuel vehicle air conditioning modification market, and the controller is an electric air conditioning system. The most core key device in China.

　　At the beginning of 2011, Dayu Electric Wuhan R&D Center and the School of Electrical Engineering of Huazhong University of Science and Technology jointly developed permanent magnet motor controllers. At the end of 2011, prototypes of 12V\24V\48V split-type automobile electric air-conditioning compressor controllers came out one after another, and started to be established in Guangdong. The automobile air conditioner manufacturer has put into trial use. In the middle of 2012, the 48V split unit controller was successfully trialled in China’s largest automobile air conditioner compressor company. Wuhan Dayu became the company’s qualified supplier and began to carry out in-depth development cooperation; at the end of 2012, I The company began to develop integrated automotive electric air-conditioning compressor controllers, becoming the first company in China to develop integrated controllers. In March 2014, the 60V all-in-one controller we developed successfully completed the high-temperature resistance experiment and successfully defeated all other low-voltage controller manufacturers. At the end of March, we received 300 sets of orders, which marked our success in the low-voltage vehicle Electric air-conditioning compressor controllers have gained an absolute advantage in the market, occupying 80% of the current market. In April 2014, the IP67-rated high-end controller successfully entered the European market.