According to Aiqi official website, Hebei Engineering Co., Ltd. of China Electric Power Construction Group is a wholly-owned subsidiary of China Electric Power Construction Group Co., Ltd., which has the qualifications of general contracting of municipal public works, general contracting of electric power engineering, general contracting of construction engineering, professional contracting of lifting equipment installation engineering and professional contracting of waterproof, anticorrosion and thermal insulation engineering. The company was formerly known as Hebei Electric Power Construction First Engineering Company, which was directly managed by SASAC. 202 1 annual ranking of the world's top 500 enterprises 107.