General items: General merchandise sales; Sales of chemical products (excluding licensed chemical products); Sales of knitwear and textiles; Import and export of goods; Technology import and export; Sales of metal materials; Sales of packaging materials and products; Sales of detergent for food; Sales of Class II medical devices; Sales of Class I medical devices; Sales of office supplies; Sales of daily chemical products; Machinery and equipment leasing; Leasing services (excluding licensing services); Sales of building waterproof coiled materials; Sales of building materials; Sales of light construction materials; Retail of arts and crafts and collectibles (excluding ivory and its products); Retail of hardware products; Sales of building decoration materials; Wholesale of hardware products; Wire and cable business; Processing of construction stone; Sales of surface functional materials; Paint sales (excluding hazardous chemicals); Sales of mechanical parts and components; Research and development of bio organic fertilizer; Fertilizer sales; Sales of copying and offset printing equipment; Office equipment sales; Office equipment leasing service; Rental of special equipment; Leasing of construction machinery and equipment; Transportation equipment leasing service; Import and export agent. (Except for the items that need to be approved according to law, business activities shall be carried out independently according to law with the business license. ) Approved items: Category III medical device business. (For projects that need to be approved according to law, business activities can only be carried out with the approval of relevant departments. The specific business projects shall be subject to the approval documents or permits of relevant departments. )