Manufacturing of metallurgical specialized equipment; manufacturing of general valves and cocks (excluding specialized equipment manufacturing); manufacturing of material handling equipment; manufacturing of construction machinery; manufacturing of mining machinery; manufacturing of hydraulic power machinery and components; manufacturing of railway locomotive and rolling stock parts; manufacturing of specialized equipment (excluding licensed specialized equipment manufacturing); manufacturing of general equipment (excluding specialized equipment manufacturing); manufacturing of specialized equipment for oil refining and chemical production; manufacturing of narrow-gauge locomotives and rolling stock; manufacturing of specialized equipment for electrical machinery; manufacturing of new energy original power equipment; manufacturing of industrial robots; manufacturing of industrial automatic control system devices; manufacturing of furnaces, kilns, and electric furnaces; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; research and development of emerging energy technologies; research and development of intelligent robots; sales of metallurgical specialized equipment; sales of valves and cocks; sales of material handling equipment; sales of construction machinery; sales of mining machinery; sales of hydraulic power machinery and components; sales of specialized equipment for oil refining and chemical production; sales of railway locomotive and rolling stock parts; sales of railway locomotives and rolling stock; sales of specialized equipment; sales of new energy original power equipment; sales of intelligent robots; sales of industrial robots; sales of industrial automatic control system devices; sales of furnaces, kilns, and electric furnaces; sales of environmental protection specialized equipment; installation and maintenance of industrial robots; repair of general equipment; repair of specialized equipment; installation services for general mechanical equipment; industrial design services; labor services (excluding labor dispatch); leasing services (excluding licensed leasing services); leasing of non-residential real estate; import and export of goods. Licensed items: manufacturing of specialized equipment; construction engineering construction.