Research and development of motors and control systems; manufacturing of fans and fans; sales of fans and fans; fishing machinery manufacturing; fishing machinery sales; motor manufacturing; sales of mechanical and electrical equipment; moped manufacturing; sales of mopeds, scooters and spare parts; motorcycle parts manufacturing; motorcycles and spare parts wholesale; auto parts and accessories manufacturing; auto parts wholesale; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; technology import and export; goods import and export.