General project: Sales of petroleum products (excluding hazardous chemicals); Wholesale of finished oil products (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Sales of specialized chemical products (excluding hazardous chemicals); Lubricant sales; Sales of metal ores; Sales of non-metallic minerals and products; Sales of building materials; Battery sales; Tram sales; Mechanical equipment leasing; Sales of mechanical and electrical equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Special equipment sales; Rental of special equipment; General equipment repair; Electrical equipment repair; Sales of material handling equipment; Sales of intelligent port loading and unloading equipment; Sales of new energy driven equipment; Sales of electric accessories for new energy vehicles; Sales of new energy vehicles; Retail of automotive spare parts; Used car brokerage; Retail of electronic components; Research and development of metal products; Sales of metal products; Sales of daily necessities; Import and export of goods; Technology import and export; Non residential real estate leasing; Conference and exhibition services; Enterprise management; Information technology consulting services; Socio economic consulting services; Engineering and technical services (excluding planning management, survey, design, and supervision); Engineering management services; Industrial engineering design services; General cargo warehousing services (excluding hazardous chemicals and other projects that require licensing and approval); Domestic freight forwarding agent; Construction of landscaping and greening projects; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Domestic trade agency. (Except for projects that require approval according to law, business activities shall be conducted independently based on the business license in accordance with the law)