Import and export of goods; import and export of technology; import and export agency; manufacturing of electronic components; retail of electronic components; manufacturing of power electronic components; sales of power electronic components; research and development of hardware products; sales of electrical accessories; manufacturing of plastic products; sales of plastic products; business of wires and cables; manufacturing of instruments and meters; sales of instruments and meters; manufacturing of bicycle parts; sales of bicycle parts; assistive bicycles, agency Sales of scooters and spare parts; retail of motorcycles and spare parts; research and development of motorcycles and spare parts; manufacturing of motorcycle spare parts; manufacturing of auto parts and accessories; retail of auto spare parts; corporate management consulting; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; mechanical equipment research and development; sales of mechanical and electrical equipment; sales of electronic products; sales of intelligent power transmission and distribution and control equipment