Auto parts research and development; auto parts and accessories manufacturing; auto parts wholesale; auto parts retail; motorcycles and parts research and development; motorcycle parts manufacturing; motorcycles and parts retail; motorcycles and parts wholesale; mold manufacturing; mold sales; electrical signaling equipment manufacturing; electrical signaling equipment sales; electronic product sales; automobile decorative supplies sales ;Sales of industrial textile finished products; manufacturing of smart vehicle-mounted equipment; sales of smart vehicle-mounted equipment; general mechanical equipment installation services; non-ferrous metal casting; maintenance of electronic and mechanical equipment (excluding special equipment); retail of hardware products; wholesale of hardware products; manufacturing of hardware products; processing of mechanical parts and components; sales of mechanical parts and components; import and export of goods; import and export of technology.