Technical R&D, technical services, and technical consulting of EFI technology and electronic special equipment; production, manufacturing, sales, maintenance, and after-sales service of automobile and motorcycle injectors, EFI systems, engines, and parts; design, R&D, manufacturing, and sales of mechanical equipment and electronic equipment; auto parts, motorcycles Design, development, manufacturing, sales and after-sales service of trailer parts, marine parts, mechanical parts, power systems, internal combustion engines, fuel pumps, molds, tooling, and welding fixtures; import and export of goods and technology; engine management systems, body electronics, exhaust and emission control technology, and electronic technology , design, development, manufacturing, sales and after-sales service of communication technology and automatic control technology; sales of automobiles and motorcycles; research and development, production, sales, maintenance and after-sales service of solenoid valves and injectors; product testing services; cleaning services; mechanical processing; comprehensive network cabling; design of computer rooms , decoration, construction, maintenance, technical services; computer server rental, installation, maintenance; R&D, manufacturing, sales and after-sales service of industrial automation technology and equipment; industrial automation technology consulting and technical services; R&D, manufacturing, sales and after-sales service of sensors and their control systems and equipment.