General projects: Sales of metal materials, sales of plastic products, sales of metal mesh products, wholesale of hardware products, retail of hardware products, sales of metal structures, operation of wires and cables, production of labor protection products, manufacturing of metal materials, steel rolling processing, sales of non gold mines and products, sales of building materials, manufacturing of building decoration, plumbing pipe parts and other metal products for construction, sales of glass fiber reinforced plastic products, manufacturing of glass fiber reinforced plastic products, sales of synthetic materials, sales of high-performance fibers and composite materials, sales of new ceramic materials, sales of metal based composite materials and ceramic based composite materials, sales of coatings (excluding hazardous chemicals), manufacturing of non-ferrous metal alloys, sales of fire-fighting equipment, manufacturing of security equipment, sales of insulation materials, Manufacturing of insulation and sound insulation materials, sales of insulation and sound insulation materials, promotion services for new material technologies, sales of distribution switch control equipment, manufacturing of distribution switch control equipment, sales of electrical equipment, sales of mechanical and electrical equipment, manufacturing of mechanical and electrical equipment, transportation and packaging services, supply chain management services, information consulting services (excluding licensing information consulting services). (Except for projects that require approval by law, conduct business activities independently based on the business license in accordance with the law)