Road motor vehicle production; civil nuclear safety equipment manufacturing. General items: fire technical services; pump and vacuum equipment manufacturing; pump and vacuum equipment sales; mechanical equipment research and development; mechanical equipment sales; mechanical equipment leasing; technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; automobile sales; special equipment rental; municipal facility management; motor manufacturing; environmental emergency technical equipment manufacturing; environmental emergency technical equipment sales; environmental protection special equipment manufacturing; mechanical and electrical equipment manufacturing; mechanical and electrical equipment sales; refining and chemical production special equipment manufacturing; refining and chemical production special equipment sales; marine supporting equipment manufacturing; import and export of goods; import and export of technology.