Beijing Urban Power Supply Development Corporation Beijing Guan Hai Power Supply Equipment Installation Co., Ltd. Beijing Jingdian Substation Engineering Office bpeg Beijing Ludian Electrical Equipment Co., Ltd. Beijing Huashun Electrical Installation Engineering Co., Ltd. Beijing Beibian Investment Co., Ltd. Beijing Electric Power Construction Company North China Electric Power University School of Electrical and Electronic Engineering Beijing Power Supply Construction Contracting Company Beijing Huancheng Electric Power Equipment Installation Engineering Company Beijing North China Electric Power Industry Company Beijing Tongzhou Switch Co., Ltd. Ltd. Beijing Power Transmission and Transformation Company Capital Iron and Steel Company Beijing Energy Investment (Group) Co., Ltd. Beijing Nanxing Power Engineering Company China Power Engineering Consulting Group North China Power Company Beijing Jingdian Power Engineering Company Beijing Ming Tombs Energy Storage Power Plant Beijing Hengshang Power Engineering Co., Ltd. Shenhua Guohua International Power Co., Ltd. North Tsinghua University Power Department Beijing Yanshan Jiaheng Power Engineering Co., Ltd. Beijing Hualian Power Engineering Supervision Company Beijing Electric Power Company Logistics Service Center Beijing Yifeng Power Installation Co., Ltd.

Beijing Fuxing Electric Installation Company Beijing Cheng Shunli Electric Equipment Installation and Maintenance Co., Ltd. North China Electric Power University Beijing Electric Power Engineering Company Beijing Jingneng Thermal Power Co., Ltd. North China Electric Power Materials Corporation Datang International Power Generation Co., Ltd. Beijing Gaojing Shougang Construction Group Co., Ltd. North China Power Grid Co., Ltd. Beijing Capital Airport Electric Energy Co., Ltd. Water Beijing Richang Electric Engineering Co., Ltd. Beijing Xingong Electric Engineering Construction Co., Ltd. Co., Ltd. China Electric Power Research Institute North China Electric Power Research Institute Co., Ltd. Beijing Huadian Hydropower Co., Ltd. Beijing ABB High Voltage Switchgear Co., Ltd. Beijing Huitong Sheng Electric Power Engineering Co., Ltd. North China Power Grid Co., Ltd. Training Center Beijing Capital Tourism Group Co., Ltd. Beijing Shihai Electric Installation Engineering Co., Ltd. Beijing Haohua Electric Equipment Installation Engineering Co., Ltd. Beijing Huaneng Beijing Thermal Power Co., Ltd. Beijing Changping Power Supply Electrician Cheng An Beijing Electric Power Economic Research Institute China Petrochemical Beijing Yanshan Petrochemical Co., Ltd. Beijing Cheng Shunli Electric Power Equipment Installation and Maintenance Company Beijing Fengxin