General items: Import and export of goods; Technology import and export; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Sales of electronic products; Sales of electronic components and electromechanical components; Sales of machinery and equipment; Sales of office supplies; Clothing retail; Retail of shoes and hats; Retail of hardware products; Sales of metal materials; Wood sales; Sales of building materials; Sales of building decoration materials; Sales of new ceramic materials; Sales of metal forming machine tools; Mold sales; Furniture sales; Sales of household appliances; Sales of solar thermal utilization equipment; Sales of labor protection articles; Sales of arts and crafts products and etiquette supplies (excluding ivory and its products); Retail of cosmetics; Sales of special equipment for plastic processing; Sales of knitwear and textiles; Sales of special textile equipment; General merchandise sales; Sales of Class II medical devices; Sales of Class I medical devices; Sales of intelligent instruments; Sales of special labor protection articles; Sales of packaging materials and products; Sales of glassware; Sales of special packaging equipment; Sales of metal packaging containers and materials; Sales of chemical products (excluding licensed chemical products); Sales of communication equipment; Sales of daily necessities; Camera and equipment sales; Retail of sports goods and equipment; Sales of gifts and flowers; Retail of auto parts; Sales of new cars; Used car sales; Luggage sales; Retail of computer software, hardware and auxiliary equipment; Computer system services; Sales of agricultural and sideline products; Feed raw material sales; Health care services (non-medical); Food sales (only pre packaged food is sold).