Shenzhen SLY Technology Co., Ltd Sales of electronic products; Sales of electronic components and electromechanical component equipment; Sales of photovoltaic equipment and components; Domestic trade agency; Sales of mechanical and electrical equipment; Sales of power distribution switch control equipment; Battery sales; Research and development of power distribution switch control equipment; Sales of intelligent power transmission and distribution and control equipment; Technical services for solar power generation; Maintenance of electronic and mechanical equipment (excluding special equipment); Contract energy management; Sales of instruments and meters; Technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion; Professional cleaning, cleaning, disinfection services; Labor services (excluding labor dispatch); Building cleaning services; Information consulting services (excluding licensing information consulting services). (Except for projects that require approval according to law, they shall independently carry out business activities with their business licenses according to law. ) The permitted business projects are: Technology import and export; Import and export of goods.