HYAT23 150x2x0.5 HYAT23 100x2x0.4 铠装直埋通信电缆 HYAT23 HYAT23 150x2x0.5 HYAT23 100x2x0.4 铠装直埋通信电缆 MKVV|天津市电缆总厂第一分厂