Manufacturing of general parts and components; manufacturing of mechanical and electrical equipment; manufacturing of agricultural machinery; manufacturing of metal daily necessities; manufacturing of plastic products; manufacturing of sporting goods and equipment; manufacturing of metal materials; manufacturing of electronic components; manufacturing of metal signs for transportation and public administration; sales of mechanical and electrical equipment; sales of agricultural machinery; retail of automobile parts and accessories; retail of motorcycles and spare parts; sales of outdoor products; Internet sales (except for the sale of goods requiring licenses); retail of sporting goods and equipment; sales of plastic products; sales of metal products; home Sales of electrical appliances; sales of bearings, gears and transmission parts; sales of rail transit engineering machinery and components; sales of power electronic components; sales of mechanical parts and components; rubber product manufacturing; sales of signs for transportation and public administration; manufacturing of motorcycle parts and accessories; manufacturing of automobile decorative products; sales of non-ferrous metal alloys; advertising design and agency; advertising release; sales of lighting fixtures; sales of automobile decorative products; manufacturing of lighting fixtures; sales of lighting fixtures; furniture installation and maintenance services; technology import and export; import and export of goods.