No.436 Tongzhou District Popularity Ranking Beijing No.8 Dian Qi Gao Di Ya Complete Set No.9 Electrical Cabinet No.10 Power Distribution Cabinet No.11 Ring Main Units No.14 Neng Xiao Management No.17 Pei Nets Automation No.17 Xiang Shi Substations No.18 Distribution Automation No.23 Switchgear No.29 Servo Drives No.31 CNC Machine Tools No.36 Power Transmission and Distribution 中关村高新技术企业 高新技术企业 省级高新技术企业 市级高新技术企业