Chongqing Yubei DistrictNo.9 Song Bian DianNo.10 Substations EngineeringNo.20 Dian Qi She Bei Yong Dian Lan / Lines CableNo.21 Dian Xian / CablesNo.30 Power EngineeringNo.47 Dian Li Gong YingNo.50 PowerNo.50 ElectricalNo.51 Power EquipmentNo.63 Power DistributionNo.99 Power Systems Electromechanical EquipmentISO9001认证