Manufacturing of general equipment (excluding manufacturing of special equipment); manufacturing of specialized equipment (excluding manufacturing of licensed specialized equipment); sales of mechanical equipment; research and development of mechanical equipment; manufacturing of industrial automatic control system devices; sales of industrial automatic control system devices; manufacturing of intelligent basic manufacturing equipment; sales of industrial control computers and systems; manufacturing of bearings, gears, and transmission components; sales of bearings, gears, and transmission components; manufacturing of gears, gear reducers, and gearboxes; sales of gears, gear reducers, and gearboxes; software development; software sales; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; road freight transport for trucks with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); import and export of goods; import and export of technology.