Hefei Changsheng Mechanical&Electrical Technology Co. Ltd was established in 2010, located in Hefei National Technology Industry Development Zone, Anhui Province. The company specializes in the production of compressor valve plate, is an excellent supplier of automotive air conditioning compressors and air compressors in China. The company has passed IATF16949 quality system certification and GB/T 19001-2016/ISO 9001: 2015 quality management system, GB/T 28001-2011/OHSAS 18001: 2007 occupational health and safety management system, GB/T 24001-2016/ISO 14001: 2015 environmental management system certification; It has obtained 10 utility model patents and one national invention patents, which have been incorporated into the "industrial Enterprises above the scale" of the National Bureau of Statistics and belongs to the "medium-sized enterprises". As a member of the National Association of Refrigeration and Air Conditioning, he has been awarded the title of "Hefei High-tech Zone Technology Giant Cultivation Enterprise" and "Hefei City Innovative Enterprise", and has been awarded the title of "Safe Production Standardization Level III Enterprise (Machinery)" by the High-tech Zone.

Guangzhou Berlin Auto Parts Manufacturing Co., Ltd. Established in 2006, a modern enterprise specializing in manufacturing automotive air conditioning compressors. Locates in Guangzhou, 5 kilometers away from the Baiyun International Airport and more than two hundred staff including professional technicians, specialized in R & D.