General project: Manufacturing of specialized equipment for refining and chemical production; Sales of specialized equipment for refining and chemical production; Production of chemical products (excluding licensed chemical products); Sales of chemical products (excluding licensed chemical products); Specialized equipment manufacturing (excluding licensed professional equipment manufacturing); Sales of mechanical equipment; Manufacturing of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Installation services for ordinary mechanical equipment; Mechanical equipment research and development; Mechanical equipment leasing; Maintenance of electronic and mechanical equipment (excluding special equipment); Special equipment repair; General component manufacturing; Mechanical parts and component processing; Sales of mechanical parts and components; Lubricant sales; Supply chain management services; Information technology consulting services; Loading, unloading and handling; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Network technology services; Internet of Things technology services; Research and development of Internet of Things technology; Import and export of goods; Technology import and export. (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)