General project: Sales of chemical products (excluding licensed chemical products); Sales of specialized chemical products (excluding hazardous chemicals); Sales of food additives; Sales of feed additives; Fertilizer sales; Battery sales; Sales of mechanical equipment; Sales of rubber products; Sales of daily wooden products; Sales of needle textiles; Sales of new cars; Wholesale of automotive parts; Retail of automotive parts; Wholesale of hardware products; Retail of hardware products; Sales of electronic components and electromechanical component equipment; Sales of building materials; Sales of electronic products; Sales of gas and liquid separation and purification equipment; Sales of instruments and meters; Sales of metal materials; Metal structure sales; Sales of household appliances; Enterprise management consulting; Technical services, development, consultation, exchange, transfer, and promotion. (Except for projects that require approval in accordance with the law, business activities shall be carried out independently with the business license in accordance with the law) Licensed projects: Import and export of goods; Technology import and export; Mobile pressure vessel/cylinder filling. (For projects that require approval 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. )