The business scope includes: General items: Supply chain management services; Data processing service; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Sales of building materials; Sales of special chemical products (excluding hazardous chemicals); Sales of reinforcement products for construction; Wholesale of hardware products; Retail of hardware products; Door and window sales; Sales of plastic products; Sales of cement products; Sales of machinery and equipment; Sales of petroleum products (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Import and export of goods; Technology import and export; Processing of construction stone; Manufacturing of cement products; Manufacturing of concrete structural members; Sales of concrete structural members; New material technology promotion service; Rental of construction machinery and equipment.