Sales of complete equipment for high and low voltage switches and control cabinets, complete automation equipment for power systems, relay protection devices, wire and cable trays, industrial instruments and accessories, and related technical consulting services; Sheet metal processing and spare parts manufacturing; Inverter energy-saving engineering, PLC control engineering construction and related technical consulting services; Development and sales of hardware and computer software and hardware. (Projects that require approval by law can only be carried out after approval by relevant departments) General projects: Research and development of efficient and energy-saving technologies in the power industry; Manufacturing of transformers, rectifiers, and inductors; Manufacturing of mechanical and electrical equipment; Sales of distribution switch control equipment; Manufacturing of power transmission, distribution and control equipment; Research and development of distribution switch control equipment; Research and development of motors and their control systems; Engineering and technical research and experimental development; Mechanical equipment research and development; Research and development of metal products; Manufacturing of hardware products; General equipment manufacturing (excluding special equipment manufacturing); Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law)