Technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; manufacturing of auto parts and accessories; retail of auto parts; wholesale of auto parts; manufacturing of motorcycle parts; wholesale of motorcycles and parts; retail of motorcycles and parts; manufacturing of fasteners; sales of fasteners ; Retail sales of bicycles and spare parts; bicycle manufacturing; import and export of goods; technology import and export; manufacturing of pneumatic and electric tools; sales of pneumatic and electric tools; manufacturing of electric motors; manufacturing of electric motors; manufacturing of micro motors and components; sales of electrical equipment; sales of power electronic components; sales of micro motors and components.