Manufacturing of power electronic components; sales of power electronic components; retail of electronic components; wholesale of electronic components; manufacturing of auto parts and accessories; retail of auto parts; wholesale of auto parts; retail of motorcycles and parts; research and development of motorcycles and parts; manufacturing of motorcycle parts; wholesale of motorcycles and parts; research and development of auto parts; remanufacturing of auto parts Manufacturing; distribution switch control equipment manufacturing; distribution switch control equipment sales; distribution switch control equipment research and development; power transmission, distribution and control equipment manufacturing; electronic special material research and development; electronic special material manufacturing; electronic product sales; electronic special material sales; power facility equipment sales; power facility equipment manufacturing; electrical equipment sales; electrical instrument sales; electrical equipment Instrument manufacturing; mechanical and electrical equipment manufacturing; sales of mechanical and electrical equipment; sales of electrical accessories; sales of industrial automatic control system devices; manufacturing of industrial automatic control system devices; manufacturing of electronic components and electromechanical components and equipment; manufacturing of intelligent instruments and meters; sales of intelligent instruments and meters; manufacturing of instruments and meters; sales of electronic components and electromechanical components and equipment; sales of instruments and meters ; Mechanical parts and parts processing; Mechanical parts and parts sales; Photovoltaic equipment and component manufacturing; Photovoltaic equipment and component sales; Hardware product manufacturing; Plastic product manufacturing; Plastic product sales; New material technology research and development; Mold manufacturing; Mold sales; Integrated circuit sales; General parts manufacturing; Integrated circuit manufacturing; Import and export of goods; Import and export of technology.