General project: Sales of steel reinforcement products for construction; Sales of metal materials; Wholesale of hardware products; Retail of hardware products; Sales of lubricating oil; Sales of mechanical equipment; Electronic product sales; Sales of non edible salt; Sales of graphite and carbon products; Sales of metal ores; Sales of insulation materials; Sales of daily ceramic products; Sales of specialized equipment for environmental protection; Sales of instruments and meters; Sales of non-ferrous metal alloys; Sales of new metal functional materials; Sales of refractory materials; Sales of lighting fixtures; Sales of daily necessities; Sales of household items; Sales of plastic products; Furniture sales; Sales of office supplies; Sales of labor protection equipment; General equipment repair; Road freight transportation of ordinary freight vehicles with a total weight of 4.5 tons or less (excluding online freight and dangerous goods); Trade brokers; Domestic trade agency; Import and export of goods; Import and export agency (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law)