Manufacturing of auto parts and accessories; research and development of auto parts; wholesale of auto parts; remanufacturing of auto parts; retail of auto parts; sales of special rail transit equipment, key systems and components; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; electronic component manufacturing; other electronic device manufacturing; electronics Manufacturing of special materials; research and development of special electronic materials; sales of electronic products; sales of integrated circuit chips and products; integrated circuit design; spraying processing; manufacturing of motorcycle parts and components; research and development of motorcycles and parts; manufacturing of integrated circuit chips and products; manufacturing of electric motors; research and development of motors and their control systems; motor manufacturing; technology import and export; import and export of goods.