Retail of household appliances; Wholesale of stationery supplies; Sales of communication equipment; Sales of mechanical equipment; Wholesale of kitchen utensils, sanitary ware, and daily necessities; Sales of office equipment consumables; Sales of fire-fighting equipment; Sales of mechanical and electrical equipment; Sales of hygiene products and disposable medical supplies; Internet sales (excluding sales of goods that require licensing); Special equipment repair; Rental of daily necessities; Domestic freight transportation agency; Information technology consulting services; Technology import and export; Import and export of goods.