Manufacturing of special equipment (excluding manufacturing of licensed professional equipment); manufacturing of mechanical and electrical equipment; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; mechanical equipment leasing; sales of artificial intelligence hardware; sales of new energy prime mover equipment; sales of generators and generator sets; sales of electrical auxiliary parts; sales of metal forming machine tools; sales of hydraulic power machinery and components; sales of high-speed precision gear transmissions; sales of calculator equipment; wholesale of electronic components; sales of mechanical parts and components; electronic components Sales of electromechanical component equipment; sales of mechanical and electrical equipment; sales of electrical equipment; wholesale of hardware products; sales of metal tools; sales of mechanical equipment; sales of agricultural, forestry, animal husbandry, sideline, and fishery professional machinery; sales of agricultural, forestry, animal husbandry, and fishery machinery accessories; wholesale of auto parts; technology import and export; import and export of goods; import and export agents; engineering and technology research and experimental development; new material technology research and development; natural science research and experimental development; motorcycle and parts research and development; Internet of Things technology research and development; metal products research and development; and electronic special materials research and development.