Research and development of engine ignition technology, sensing technology, materials, manufacturing processes and intelligent manufacturing equipment; product research and development, manufacturing, raw material product testing and technical services of automobile and motorcycle spare parts; production and sales of spark plugs, automobile 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, construction hardware, instrumentation and metal materials and chemical raw materials permitted by policies; development and sales of computer software. Operate the export business of the company’s self-produced spark plugs, automotive electrical appliances and other automobile and motorcycle parts, special ceramic products, refractory products, and environmental protection products; operate the import and export of raw and auxiliary materials, instruments, mechanical equipment, spare parts and technology required for the company’s production Export business (except for goods and technologies that are restricted by the state and prohibited from import and export by the state); engage in processing with imported materials and “three-to-one” business; site rental services; loading and unloading; transportation agency; production of cutting tools; sales of grinding wheels, machine tool equipment and their parts, and lubricants.