Production and sales of spark plugs, automotive electrical appliances and other automobile and motorcycle parts, special ceramic products, refractory products, and environmental protection products; sales of automobiles (excluding cars) and motorcycles; sales of mechanical and electrical equipment, building hardware, instruments, and metal materials and chemical raw materials (excluding flammable, explosive, and chemical dangerous goods) permitted by policies; development and sales of computer software; operating the company’s own products It is engaged in the export business of spark plugs, automotive electrical appliances and other automobile and motorcycle parts, special ceramic products, refractory products, and environmental protection products; engaged in the import and export business of raw and auxiliary materials, instruments, mechanical equipment, spare parts and technologies required for the production of the enterprise (except for goods and technologies that are restricted by the state and prohibited from import and export by the state); engaged in the processing of imported materials and the “three-to-one” business.