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Licensed project: Construction engineering design; Construction project construction; Special equipment design; Manufacturing of special equipment; Installation, renovation, and repair of special equipment; Design of civil nuclear safety equipment; Road freight transportation (excluding dangerous goods); Manufacturing of civil nuclear safety equipment. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to the approval documents or licenses issued by relevant departments.) General projects: sales of special equipment; Sales of specialized equipment for refining and chemical production; Manufacturing of specialized equipment for refining and chemical production; Mechanical equipment research and development; Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Installation services for ordinary mechanical equipment; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Entrepreneurial space services; Information consulting services (excluding licensed information consulting services); Non residential real estate leasing; estate management; Manufacturing of metal structures; Sales of non-ferrous metal alloys; Special operation personnel safety technical training; Sales of coal and its products; Sales of refractory materials; Sales of electrical instruments and meters; Import and export of goods; Technology import and export. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law)show more Licensed project: Construction engineering design; Construction project construction; Special equipment design; Manufacturing of special equipment; Installation, renovation, and repair of special equipment; Design of civil nuclear safety equipment; Road freight transportation (excluding dangerous goods); Manufacturing of civil nuclear safety equipment. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to the approval documents or licenses issued by relevant departments.) General projects: sales of special equipment; Sales of specialized equipment for refining and chemical production; Manufacturing of specialized equipment for refining and chemical production; Mechanical equipment research and development; Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Installation services for ordinary mechanical equipment; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Entrepreneurial space services; Information consulting services (excluding licensed information consulting services); Non residential real estate leasing; estate management; Manufacturing of metal structures; Sales of non-ferrous metal alloys; Special operation personnel safety technical training; Sales of coal and its products; Sales of refractory materials; Sales of electrical instruments and meters; Import and export of goods; Technology import and export. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law)