Manufacturing of plastic products; manufacturing of new building materials (excluding hazardous chemicals); manufacturing of synthetic materials (excluding hazardous chemicals); sales of synthetic materials; sales of building materials; sales of metal products; sales of metal wires, ropes, and their products; manufacturing of metal wires, ropes, and their products; manufacturing of general-purpose components; sales of mechanical parts and components; internet data services; computer system services; information system integration services; labor services (excluding labor dispatching); import and export of goods; import and export of technology; agency for import and export.