Manufacturing of new energy original power equipment; sales of new energy original power equipment; information technology consulting services; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; leasing of mechanical equipment; manufacturing of railway locomotive and rolling stock parts; repair of electrical equipment; repair of general equipment; leasing of non-residential real estate; import and export of goods; import and export of technology; manufacturing of special equipment (excluding licensed special equipment). Licensed items: installation, repair, and testing of power transmission, power supply, and power receiving facilities.