Mechanical parts and parts processing; Mechanical parts and parts sales; Motorcycle parts manufacturing; Motorcycles and spare parts wholesale; Motorcycle and spare parts retail; Auto parts and accessories manufacturing; Auto parts remanufacturing; Auto parts wholesale; Auto parts retail; Mechanical and electrical equipment manufacturing; Mechanical and electrical equipment sales; Electricity Motor manufacturing; Motor manufacturing; Sales of electrical equipment; Sales of generators and generator sets; Manufacturing of machine tool functional parts and accessories; Sales of machine tool functional parts and accessories; Manufacturing of power electronic components; Sales of power electronic components; Manufacturing of electronic components and electromechanical component equipment; Sales of electronic components and electromechanical component equipment; Electronic components Manufacturing; wholesale of electronic components; retail of electronic components; manufacturing of special electronic equipment; sales of special electronic equipment; manufacturing of special equipment (excluding manufacturing of licensed professional equipment); sales of mechanical equipment; manufacturing of hardware products; wholesale of hardware products; retail of hardware products; sales of electronic products; manufacturing of refrigeration and air-conditioning equipment; refrigeration and air-conditioning Equipment sales; gas compression machinery manufacturing; gas compression machinery sales; instrumentation manufacturing; instrumentation sales; rubber product manufacturing; rubber product sales; plastic product manufacturing; plastic product sales; technology import and export; goods import and export; technical services, technology development, technology consultation, technology exchange, technology transfer, and technology promotion.