No.40 Tianxin District Popularity Ranking Changsha Hunan No.4 Substations No.5 Song Bian Dian No.5 Song Bian Dian Engineering No.7 Substations Engineering No.9 Power Engineering Design No.12 Power Grid No.15 Power Engineering Management No.16 Electrical Engineering No.16 Dian Li Gong Cheng Shi Engineering No.21 Survey Design Institute No.23 Power Engineering No.23 Power Distribution 省科技型中小企业 高新技术企业 省级高新技术企业 科技型中小企业