... large difference of level, able to bear external mechenical forces 1) ISO 9001:2008 . 2) IEC, CCC certified. 3) ... 1KV.Suitable for laying in hotels, railway stations, chemical, oil platforms, mines, power stations, subway, high-rise buildings. 1.Flexible Eletric wire cable:1 ... and the flame self-extinguishing characteristics of residual. XLPE insulated and PVC sheathed,steel wire armoured power cable