Manufacturing of fasteners; manufacturing of general parts and components; manufacturing of metal materials; manufacturing of auto parts and accessories; manufacturing of motorcycle parts and accessories; manufacturing of hardware products; manufacturing of metal tools; manufacturing of metal accessories for construction; sales of fasteners; sales of metal materials; sales of metal products; sales of mechanical parts and components; sales of molds; sales of mechanical equipment; sales of office equipment; wholesale of hardware products; hardware Product retail; steel rolling processing; mechanical parts and parts processing; wholesale of automobile spare parts; retail of automobile spare parts; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; solar power generation technical services; import and export of goods; import and export of technology; import and export agency; sales of chemical products (excluding licensed chemical products) Licensed projects: power generation business, power transmission business, power supply (distribution) business