General Items: Sales of mechanical equipment; Technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion; Sales of car washing equipment; Network technical services; Conference and exhibition services; Sales of intelligent basic manufacturing equipment; Software development; Information technology consulting services; Car washing services; Leasing of mechanical equipment; Repair of general equipment; Repair of special equipment; Repair of electrical equipment; Sales of electronic components and electromechanical assembly equipment; Sales of Internet of Things (IoT) equipment; Information consulting services (excluding licensed information consulting services); Goods import and export; Technology import and export; Sales of mechanical parts and components; Sales of automobile decorative products; Wholesale of automobile spare parts; Retail of automobile spare parts; Repair of metal products; Labor services (excluding labor dispatch). (Except for projects that must be approved in accordance with the law, the business activities shall be carried out independently in accordance with the law with the business license. )