Technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; manufacturing of motorcycle spare parts; research and development of motorcycles and spare parts; manufacturing of high-speed rail equipment and accessories; wholesale of automobile spare parts; retail of automobile spare parts; manufacturing of automobile parts and accessories; manufacturing of metal accessories for construction; furniture spare parts Production of accessories; sales of furniture spare parts; sales of household appliance spare parts; repair of general equipment; manufacturing of general equipment (excluding manufacturing of special equipment); manufacturing of general parts; sales of mechanical equipment; manufacturing of refrigeration and air-conditioning equipment; research and development of mechanical equipment; manufacturing of other general instruments; manufacturing of marine supporting equipment; manufacturing of special equipment (excluding manufacturing of licensed professional equipment); mechanical parts parts and components processing; sales of mechanical parts and components; research and development of automobile parts; manufacturing of computer software, hardware and peripheral equipment; sales of battery spare parts; sales of high-speed rail equipment and accessories; production of battery spare parts; repair of special equipment; technology import and export; import and export of goods; import and export agency; sales of refrigeration and air-conditioning equipment; manufacturing of special equipment for oil refining and chemical production; new materials Technology research and development; research and development of efficient and energy-saving technologies in the power industry; metal structure manufacturing; sales of photovoltaic equipment and components; manufacturing of hydraulic power machinery and components; manufacturing of daily necessities made of metal; research and development of key technologies for waste heat power generation; hardware product manufacturing; hardware product research and development; research and development of emerging energy technologies; manufacturing of new energy prime mover equipment; sales of new energy vehicle electrical accessories; research and development of energy recovery systems