Manufacturing of power distribution switchgear equipment; manufacturing of railway rolling stock parts; manufacturing of high-speed rail equipment and parts; sales of railway transportation equipment; manufacturing of urban rail transit equipment; manufacturing of electrical accessories; manufacturing of power transmission and distribution and control equipment; manufacturing of mechanical and electrical equipment; manufacturing of electrical supplies; manufacturing of lighting fixtures; manufacturing of electronic components; manufacturing of hardware products; manufacturing of photovoltaic equipment and components; manufacturing of electrical instrumentation; manufacturing of security equipment; energy storage technical services; sales of charging piles; manufacturing of batteries; solar power generation technical services; manufacturing of generators and generator sets; manufacturing of general equipment (excluding special equipment); manufacturing of new energy original power equipment; railway transportation auxiliary activities; manufacturing of refrigeration and air conditioning equipment; manufacturing of household appliances; manufacturing of sanitary ware; technology import and export; goods import and export. Licensed items: manufacturing of wires and cables; manufacturing of railway transportation infrastructure equipment; installation, modification and repair of special equipment; manufacturing of railway rolling stock; maintenance of railway rolling stock; electrical installation services.