Domestic trade agency: sales: agricultural and sideline products, fresh aquatic products, vegetables, metal materials, mechanical equipment and accessories, mechanical and electrical equipment and accessories, wires and wires, lubricating oil (small packaging) department stores, clothing and footwear, knitted textiles, leather products, Bags, toys, handicrafts (excluding ivory and its products), cosmetics (designed packaging), office supplies, computer software and hardware and accessories, communication equipment (excluding satellite ground receiving equipment, bearings: not in the coal-fired business prohibition zone) Highly polluting fuel): Import and export of goods or technologies (except the import and export of goods and technologies that are prohibited by the state or involve administrative approval): computer technology development, technical services, technical consultation, bearing research and development: etiquette services, public relations event planning, computers Graphic design, production, corporate image planning, on-site maintenance of computer communication equipment, road transportation of general goods, and housing construction projects. (Projects that are subject to approval in accordance with the law can only be carried out after approval by the relevant department)