Business scope: General items: Sales of light building materials; Sales of building blocks; Sales of building decoration materials; Sales of building ceramic products; Sales of building materials; Floor sales; Timber sales; Wood based panel sales; Brick and tile sales; Sales of cement products; Sales of building waterproof roll products; Sales of refractory materials; Sales of heat and sound insulation materials; Sales of thermal insulation materials; Sales of reinforcement products for construction; Sales of metal parts for construction; Sales of metal materials; Sales of metal tools; Hardware products retail; Wholesale of hardware products; Sales of concrete structural members; Sales of rubber products; Sales of metal cutting and welding equipment; Sales of mechanical parts and components; Sales of mechanical equipment; Sales of special chemical products (excluding hazardous chemicals); Paint sales (excluding hazardous chemicals); Sales of doors and windows; Sales of plastic products; Sales of generators and generator sets; Furniture sales; Sales of furniture spare parts; Retail of kitchenware, sanitary ware and daily necessities; Sales of electronic products; Sales of musical instrument parts; Musical instrument retail; Wholesale of musical instruments; Luggage sales; Import and export of goods; Technology import and export. (except for projects subject to approval according to law, business activities shall be carried out independently according to law with the business license)