Manufacturing of special equipment for environmental protection; battery manufacturing; battery sales; industrial robot manufacturing; new energy vehicle sales; research and development of intelligent robots; research and development of mechanical equipment; wholesale of auto parts; retail of auto parts; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; sales of special equipment; sales of metal structures; sales of material handling equipment; sales of daily chemical products; sales of disinfectants (excluding hazardous chemicals); sanitary ware Sales; sales of metal products; retail of hardware products; wholesale of hardware products; sales of plastic products; leasing of machinery and equipment; environmental consulting services; technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion; sales of household waste treatment equipment; maintenance of electronic and mechanical equipment (excluding special equipment); repair of general equipment; sales of trams; car sales; motor vehicle repair and maintenance; technology import and export; import and export of goods.