Manufacturing and processing of jacks, mechanical hydraulic equipment, hardware tools, auto parts and motorcycle parts (except engines), and plastic products; operating the export business of the enterprise’s self-produced products and technologies and the import business of mechanical equipment, spare parts, raw and auxiliary materials and technologies required by the enterprise, except for goods and technologies that are restricted by the state or prohibited from import and export; cable trays and accessories; manufacturing of general parts; sales of power facilities and equipment; sales of building materials. Licensed items: Import and export of goods.