General project: Wholesale of hardware products; Retail of hardware products; Mold sales; Sales of mechanical parts and components; Sales of doors and windows; Sales of building metal accessories; Sales of fans and fans; Sales of metal tools; Sales of power facilities and equipment; Sales of needle textiles and raw materials; Sales of daily necessities; Sales of non-metallic minerals and products; Sales of building materials; Sales of rubber products; Sales of plastic products; Sales of mechanical equipment; Sales of metal products; Sales of fire-fighting equipment; Sales of labor protection equipment; Sales of needle textiles; Sales of daily necessities; Sales of coatings (excluding hazardous chemicals); Sales of building decoration materials; Sales of packaging materials and products; Sales of insulation materials; Sales of distribution switch control equipment; Sales of mining machinery; Fastener sales; Sales of metal wire ropes and their products; Sales of metal cutting and welding equipment; Sales of metal structures; Sales of pneumatic and electric tools; Sales of mechanical and electrical equipment; Sales of electrical equipment; Sales of gears, gear reducers, and gearboxes; Sales of photovoltaic equipment and components; Operation of wires and cables; Fiber optic cable sales; Sales of building blocks; Fiber optic sales; Sales of building waterproofing membrane products; Sales of architectural ceramic products; Sales of electrical accessories; Lubricant sales; Sales of metal materials; Sales of instruments and meters; Sales of office equipment; Sales of drawing, calculation, and measurement instruments; Sales of electrical instruments and meters; Sales of industrial textile products. (Except for projects that require approval according to law, business activities shall be conducted independently based on the business license in accordance with the law)