Remanufacturing of auto parts; retail of auto parts; research and development of auto parts; wholesale of auto parts; processing of mechanical parts and components; sales of mechanical parts and components; manufacturing of motorcycle parts; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; manufacturing of fasteners; sales of fasteners; sales of new energy vehicle electrical accessories; intelligent control system integration; manufacturing of intelligent basic manufacturing equipment; sales of intelligent basic manufacturing equipment; sales of industrial automatic control system devices; manufacturing of industrial automatic control system devices; integrated circuit design; sales of integrated circuits; sales of electrical equipment; information system integration services; information system operation and maintenance services; information technology consulting services; manufacturing of electronic special equipment; manufacturing of railway rolling stock parts; manufacturing of general parts; sales of molds; manufacturing of general equipment (excluding special equipment); repair of general equipment; research and development of mechanical equipment; sales of mechanical and electrical equipment; manufacturing of special equipment (excluding licensed professional equipment); manufacturing of pneumatic and electric tools; sales of pneumatic and electric tools; manufacturing of metal tools; sales of metal cutting and welding equipment; manufacturing of metal cutting and welding equipment; metal surface treatment and heat treatment processing; manufacturing of hydraulic, pneumatic, and sealing components and systems; sales of hydraulic, pneumatic, and sealing components and systems; manufacturing of hydraulic power machinery and components; sales of hydraulic power machinery and components; bidding agency services; leasing of special equipment; manufacturing of electronic components and机电组件 equipment; sales of electronic components and机电组件 equipment; manufacturing of industrial robots; sales of industrial robots; installation and maintenance of industrial robots