Retail of needle textiles; Wholesale of needle textiles; Wholesale of instruments and meters, hardware products; Retail of hardware; Wholesale of rubber products; Sales of labor protection supplies; Sales of synthetic materials; Sales of high quality synthetic rubber; Wholesale of stationery; Retail of station; Retail of daily necessities; Retail of maternity and baby products, wholesale of plastic products; Wholesale of electronic components; Retail of electronic office equipment; Wholesale of products; Sales of chemical products (excluding licensed chemical products); Sales of high purity elements and compounds, wholesale of building materials; Sales of Class I medical devices; Sales of Class medical devices; Retail of medical masks; Wholesale of medical masks; Sales of daily masks (non-medical); Retail of protective supplies for medical staff, wholesale of protective supplies for medical staff; Sales of sanitary supplies and disposable medical supplies (except for projects that must be approved according to law, carry out business activities in accordance with the law with a license). Permitted projects: Import and export of goods, import and export of technology; Import and export agency (for projects that must be approved according to law, business activities be carried out after approval from relevant departments, and specific business items shall be subject to the approval results).