50对电话电缆 ZR-HYA-50X2X0.5ZR-HYA ZRC-HYA 阻燃通信电缆;HYA通信电缆50对X2X0.5市内通信电缆型号及名称分析表HYA22 HYA23 HYAT HYAT23 HPVV HYV HYVV HYY HYA53 HYAT53,HYA5—2400大对数;HYA音频电缆100x2x0.5通信电缆HYA50对线 HYA50对电缆型号;电缆ZR-HYA-50x2x0.8