Various construction engineering activities; weaponry research and development and production; special equipment installation, modification and repair; special equipment manufacturing; goods import and export; installation, maintenance and testing of power transmission, supply and reception power facilities; construction labor subcontracting; road motor vehicle production. General items: generator and generator set manufacturing; generator and generator set sales; motor manufacturing; electrical machinery special equipment manufacturing; special equipment manufacturing (excluding licensed professional equipment manufacturing); general equipment manufacturing (excluding special equipment manufacturing); special equipment sales; new automobile sales; motor and its control system research and development; electrical mechanical equipment sales; electrical equipment sales; power distribution switchgear equipment manufacturing; automotive parts and accessories manufacturing; noise and vibration control services; battery sales; vibration and noise reduction equipment manufacturing; vibration and noise reduction equipment sales; industrial automatic control system device manufacturing; industrial automatic control system device sales; container manufacturing; container sales; electrical equipment repair; general equipment repair; special equipment repair; industrial design services; professional design services; technical services, technology development, technical consulting, technical exchange, technology transfer, technology promotion; new energy original power equipment manufacturing; new energy original power equipment sales; new energy vehicle complete vehicle sales; photovoltaic equipment and components manufacturing; photovoltaic equipment and components sales; power distribution switchgear equipment sales.