General project: research and development of mechanical equipment; Research and development of distribution switch control equipment; Research and development of electromechanical coupling systems; Sales of high-performance fibers and composite materials; Sales of synthetic materials; Sales of graphite and carbon products; Sales of plastic products; Sales of engineering plastics and synthetic resins; Wholesale of electronic components; Sales of distribution switch control equipment; Sales of electronic products; Sales of mechanical equipment; Sales of power electronic components; Software development; Sales of communication equipment; Sales of security equipment (except for projects that require approval in accordance with the law, operating activities shall be carried out independently with the business license in accordance with the law)