Licensed projects: construction projects, building intelligent system design, electrical installation services, power supply business, power generation business, power transmission business, power supply (distribution) business, installation, maintenance and testing of power transmission, power supply and power receiving power facilities, second type value-added telecommunications business (projects that must be approved according to law, business activities can only be carried out within the validity period of the license after approval by the relevant departments, the specific business projects and license period are based on the relevant