Manufacturing of road motor vehicles; design of special equipment; manufacturing of special equipment. General items: sales of mechanical equipment; R&D of automotive parts; manufacturing of mechanical and electrical equipment; sales of mechanical and electrical equipment; sales of generators and generator sets; manufacturing of pumps and vacuum equipment; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; manufacturing of environmental emergency technical equipment; sales of environmental emergency technical equipment; leasing of mechanical equipment; sales of rail transit engineering machinery and parts; repair of specialized equipment; water conservancy-related consulting services; information technology consulting services; management of municipal facilities; management of flood control and drainage facilities; sales of new energy vehicles; manufacturing of automotive parts and accessories; manufacturing of specialized equipment (excluding licensed specialized equipment); manufacturing of specialized equipment for electrical machinery; manufacturing of diving and rescue equipment; leasing of special equipment; sales of automobiles; emergency rescue services; sales of diving and rescue equipment; R&D of intelligent robots; integration of intelligent control systems; general cargo warehousing services (excluding hazardous chemicals and other items requiring permits); sales of mechanical parts and components.