Sales of instruments and meters; Import and export of technology; Import and export of goods; Retail of fresh eggs; Retail of household appliances; Retail of jewelry; Retail of edible agricultural products; Retail of protective equipment for medical personnel; Retail of pet food and supplies; Retail of fresh meat; Sales of batteries; Retail of kitchenware, sanitary ware and daily necessities. Retail of photographic equipment and binoculars; Retail of stationery; Retail of sporting goods and equipment; Retail of fresh vegetables; Retail of fresh fruits; Retail of electronic components; Sales of adult sex toys (excluding pharmaceuticals and medical devices); Sales of daily-use ceramic products; Sales agency; Sales of machinery and equipment; Retail of computer hardware and software and auxiliary equipment; Sales of mechanical parts and components; Sales of steel reinforcement products for construction; Sales of daily-use masks (non-medical); Online sales of food (pre-packaged food only). Sales of labor protection products; Sales of eyeglasses (excluding contact lenses); Retail of arts and crafts and collectibles (excluding ivory and its products); Sales of household appliance parts; Sales of coal and its products; Sales of textiles; Sales of metal tools; Sales of battery parts; Wholesale of auto parts; Sales of special labor protection products; Wholesale of daily necessities; Sales of daily necessities; Sales of general merchandise; Wholesale of kitchenware, sanitary ware and sundries; Internet sales (excluding the sale of goods requiring a license); Sales of building materials. Sales of lightweight building materials; Sales of building decoration materials; Sales of sealing fillers; Sales of building blocks; Sales of thermal insulation materials; Sales of metal structures; Sales of enamel products; Sales of coatings (excluding hazardous chemicals); Sales of heat insulation and sound insulation materials; Retail of hardware products; Wholesale of hardware products; Retail of auto parts; Wholesale of clothing and apparel; Retail of clothing and apparel; Professional design services; Sales of textiles and raw materials; Furniture installation and repair services. Technical services, technology development, technical consulting, technical exchange, technology transfer, and technology promotion; Food sales (pre-packaged food only); Food import and export. (Except for projects that require approval by law, business activities may be carried out independently in accordance with the law based on the business license. ) Licensed items: Retail of tobacco products; Food sales; Alcohol sales. (For projects that require approval by law, business activities may only be carried out after approval by relevant departments, and the specific business items shall be subject to the approval documents or licenses issued by relevant departments. )