广播线-通信用广播线-HYPY23 HYPV HYPV53 HYPY23 HYPV HYPV53计算机电缆规格 ZR-DJYVP ZR-DJYPV ZR-DJYPVP DJYVRP-ZRDJYVRP-DJYVRP22-ZRDJYVRP22 通讯电缆型号 通讯电缆型号HYA HYAT HYAC HYA53 通信设备电源线阻燃软结构电缆 通信机房电缆RVVZ RVVZ22 ZA-RVV ZRVVR RVVP屏蔽电缆RVVP MHYAV矿用通讯电缆－矿用通信电缆－矿用信号电缆 MHYAV MHYV MHJYV MHYA32 MHYVR HYA线-HYAT线 HYAT HYA HYA通信电缆30*2 HYA HYA 通信电缆50*2 HYA HYAC HYAT HPVV HYV HJVV 广播线-通信用广播线-HYPY23 HYPV HYPV53 HYPY23 HYPV HYPV53 广播线-通信用广播线-HYPY23 HYPV HYPY23 HYPV