Import and export of goods; import and export of technology; import and export agency; customs declaration business; food sales; road cargo transportation (excluding dangerous goods); hazardous waste management; first-class value-added telecommunications business; second-class value-added telecommunications business general items: sales of coal and products; sales of graphite and carbon products; sales of refractory materials; coking; manufacturing of non-metallic mineral products; waste asphalt recycling technology Research and development; sales of mining machinery; sales of construction materials; general cargo warehousing services (excluding hazardous chemicals and other items requiring license approval); sales of high-performance non-ferrous metals and alloy materials; sales of metal materials; manufacturing of metal materials; sales of non-ferrous metal alloys; wholesale of refined oil (excluding hazardous chemicals); manufacturing of graphite and carbon products; sales of metal ores; ovens, furnaces and electric appliances Sales of furnaces; sales of synthetic materials; sales of petroleum products (excluding hazardous chemicals); sales of power electronic components; sales of lubricants; sales of metal products; sales of non-metallic minerals and products; sales of building decoration materials; sales of cement products; mineral processing; sales of lightweight building materials; sales of building blocks; sales of bricks and tiles; sales of new automobiles; sales of new energy vehicles; sales of trams Wholesale of auto parts and accessories; retail of auto parts and accessories; wholesale of motorcycles and spare parts; rental and operation services of small and micro buses; sales of agricultural and sideline products; sales of grains; purchase of primary agricultural products; sales of food (only sales of prepackaged food); wholesale of fresh meat; sales of beans and potatoes; wholesale of edible agricultural products; wholesale of aquatic products; production, sales, processing, transportation, storage and others of agricultural products Related services; sales of machinery and equipment; sales of construction engineering machinery; sales of chemical products (excluding licensed chemical products); sales of rubber products; wholesale of hardware products; retail of hardware products; business of wires and cables; sales of electronic products; sales of communication equipment; sales of office equipment; sales of furniture; sales of household products; sales of household appliances; wholesale of stationery; wholesale of stationery. sales; sales of office supplies; retail of sporting goods and equipment; sales of labor protection products; sales of personal hygiene products; sales of sanitary products and disposable medical supplies; wholesale of cosmetics; retail of cosmetics; retail of clothing and apparel; sales of knitted textiles; recycling of renewable resources (except productive scrap metal); sales of renewable resources; recycling of productive scrap metal; processing of renewable resources; Grain and oil warehousing services; domestic cargo transportation agency; international cargo transportation agency; marketing planning; information consulting services (excluding licensed information consulting services); ticket agency services; loading and unloading; project management services; leasing services (excluding licensed leasing services); machinery and equipment leasing; housing leasing; real estate consulting; consulting and planning services; daily necessities sales; calculation Retail sales of machine software, hardware and auxiliary equipment; sales of second-class medical equipment; sales of office equipment consumables; sales of instruments and meters; advertising design and agency; technical services, technology development, technical consulting, technical exchanges, technology transfer, and technology promotion; computer system services; sales of health food (prepackaged); sales of cameras and equipment; retail sales of photographic equipment and telescopes; photographic equipment and