Import and export of goods; Technology import and export. (items subject to approval according to law can only be operated after being approved by relevant departments. Specific business items shall be subject to the approval documents or permits of relevant departments. ) general items: Sales of animal husbandry and fishery feed; Sales of feed raw materials; Sales of agricultural and sideline products; Fertilizer sales; Fertilizer sales; Sales of needle textiles and raw materials; Sales of industrial textile products; Sales of Arts and crafts products and etiquette supplies (excluding ivory and its products); Wholesale of Arts and crafts and collectibles (excluding ivory and its products); Sales of building materials; Sales of building decoration materials; Wholesale of hardware products; Sales of general merchandise; Sales of metal products; Sales of office supplies; Retail of hardware products; Retail of sporting goods and equipment; Sales of special equipment for lighting appliance production; Sales of mechanical and electrical equipment; Professional design services; Technical services, technology development, technology consultation, technology exchange, technology transfer and technology promotion; Enterprise management consulting; Information consulting services (excluding licensed information consulting services); Machining of mechanical parts and components; Sales of mechanical parts and components. (except for projects subject to approval according to law, business activities shall be carried out independently according to law with the business license)