Manufacturing of pumps and vacuum equipment; manufacturing of general equipment (excluding manufacturing of special equipment); manufacturing of electric motors; manufacturing of mechanical and electrical equipment; manufacturing of micro motors and components; manufacturing of blowers and fans; manufacturing of metal cutting and welding equipment; manufacturing of gas compression machinery; manufacturing of mechanical parts and components; manufacturing of automobile parts and accessories; manufacturing of motorcycle parts; manufacturing of special equipment for agricultural and sideline food processing; manufacturing of special equipment (excluding manufacturing of licensed professional equipment); manufacturing of metal processing machinery; and manufacturing of ordinary valves and cocks. Licensed items: import and export of goods; import and export of technology.