General project: Research and development of emerging energy technologies; Sales of coal and its products; Sales of specialized chemical products (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Manufacturing of photovoltaic equipment and components; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Import and export of goods; Technology import and export; Sales of petroleum products (excluding hazardous chemicals); Sales of station hydrogen refueling and storage facilities; Sales of gas and liquid separation and purification equipment; Sales of new catalytic materials and additives; Sales of gas compression machinery; Sales of specialized equipment for refining and chemical production; Sales of mechanical and electrical equipment; Energy storage technology services; Sales of rubber products; Sales of plastic products; Sales of instruments and meters; Sales of mechanical equipment; Sales of office equipment and consumables; Sales of office supplies; Wholesale of hardware products; Sales of building materials; Sales of insulation materials; Sales of coatings (excluding hazardous chemicals); Sales of steel reinforcement products for construction; Sales of metal products; Sales of valves and plugs; Maintenance of electronic and mechanical equipment (excluding special equipment); Electrical equipment repair; Repair of daily electrical appliances; Repair of metal products; Mechanical equipment leasing; Research and development of mechanical equipment. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed project: Hazardous chemical operation. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments. )