Technology development, technical consultation, technology services, and technology transfer in computer software and systems, new energy and energy-saving environmental protection for power systems; Technology research and development, design, production (excluding casting and forging), sales, leasing, and after-sales service of intelligent robots, intelligent inspection system equipment, intelligent microgrid equipment, energy storage equipment, energy-saving equipment, battery management equipment, electric vehicle charging and swapping equipment, instrumentation, electrical equipment, power equipment, electrical appliances, power transmission, distribution and control equipment, power quality comprehensive management devices and monitoring equipment, power metering management system equipment, energy-saving and environmentally friendly carbon crystal electric heating panels, and tools; Design, construction, installation, maintenance, and operation services for electric vehicle charging and swapping stations (fields) and intelligent microgrids; Sales of fire-fighting equipment, fire-fighting devices, security products, security monitoring systems, special vehicles, mechanical equipment, computer auxiliary equipment, and building materials; Installation of mechanical equipment; Computer system integration, installation, and maintenance; Power grid planning and design services; Power engineering consulting, design, surveying, and construction (with qualifications); General contracting of power engineering construction (with qualifications); Installation, repair, and testing of power facilities; House leasing; Contract energy management; Electrical equipment maintenance; Power supply and electricity sales services; International trade agency services; Goods import and export, technology import and export, and other items not prohibited or requiring business permits according to laws, regulations, and State Council decisions.