No.206 Yizhuang Development Zone Popularity Ranking Beijing No.2 Dian Li Shi Engineering No.12 Power Engineering Management No.12 Dian Li Gong Cheng Shi Engineering No.15 City Gas No.18 Electrical Engineering No.20 Engineering Technology Services No.28 Solar Energy Products No.28 Solar Energy No.38 Machinery No.43 Power Engineering No.47 Wind Power No.49 Electrical 高新技术企业 省级高新技术企业 市级高新技术企业