The second type of value-added telecommunications services. General projects: production of battery spare parts; sales of battery spare parts; battery sales; technology development and self-sales of automation equipment, chemical products, electronic computers, mechatronics products (except those with special national management regulations) and technical services, development, manufacturing, processing and sales of automobile parts (excluding engines), Motorcycle parts (excluding engines), electric vehicle parts (excluding engines), sales of computers and accessories, gasoline engine parts, diesel engine parts; import and export of goods, technology import and export; development, design, manufacturing, sales of motors, controllers, converters, chargers, as well as technical consultation and technical exchanges. [Projects that require approval according to law can only carry out business activities after approval from relevant departments]. .