Manufacturing of hardware products; manufacturing of metal chains and other metal products; manufacturing of metal daily necessities; manufacturing of metal processing machinery; research and development of hardware products; retail of hardware products; wholesale of hardware products; research and development of new material technology; domestic trade agency; sales of mechanical parts and components; processing of mechanical parts and components; research and development of automobile parts; remanufacturing of automobile parts; manufacturing of automobile parts and accessories; manufacturing of motorcycle parts; wholesale of motorcycles and spare parts Development; retail of motorcycles and spare parts; research and development of motorcycles and spare parts; wholesale of automobile spare parts; manufacturing of electric power facilities and equipment; sales of molds; mold manufacturing; sales of metal products; research and development of metal products; sales of metal chains and other metal products; sales of electrical equipment; import and export of goods; sales of graphene materials; sales of new ceramic materials; sales of new membrane materials; sales of inks (excluding hazardous chemicals); sales of coating equipment; manufacturing of coating equipment. (The above business projects do not include projects within the scope of special management measures for foreign investment access)