Fastener manufacturing; Fastener sales; Mold manufacturing; Mold sales; Mechanical parts and parts processing; Mechanical parts and parts sales; Auto parts and accessories manufacturing; Auto parts research and development; Metal surface treatment and heat treatment processing; Import and export of goods; Technology import and export; Production and sales of standard parts; Sales: bearings, wires and cables, auto parts, motorcycles and Parts, hardware, electricity, chemical products (excluding chemical dangerous goods and precursor chemicals), hardware tools, general machinery, electrical machinery, communication equipment (excluding radio transmitting and ground satellite receiving devices), molds, clamps, springs, metal materials (excluding rare and precious metals), rubber products, department stores (excluding agricultural films), daily miscellaneous goods (excluding fireworks and firecrackers). **[Projects whose business scope above requires approval according to law can only carry out business activities after approval from relevant departments].