General project: Manufacturing of industrial automatic control system devices; Sales of industrial automatic control system devices; Mechanical parts and component processing; Sales of mechanical parts and components; Mold manufacturing; Mold sales; General component manufacturing; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of automotive parts and accessories; Wholesale of automotive spare parts; Retail of automotive spare parts; Automotive component research and development; Sales of metal products; Research and development of metal products; Manufacturing of hardware products; Wholesale of hardware products; Retail of hardware products; Hardware product research and development; Manufacturing of electronic components and electromechanical component equipment; Sales of electronic components and electromechanical component equipment; Manufacturing of instruments and meters; Sales of instruments and meters; Manufacturing of machine tool functional components and accessories; Sales of machine tool functional components and accessories; Sales of mechanical equipment; General equipment repair; Special equipment repair; Electrical equipment repair; Installation services for ordinary mechanical equipment; Labor services (excluding labor dispatch) (except for projects that require approval according to law, operating activities can be carried out independently based on the business license in accordance with the law