电话电缆MHYAV30*2*0.8
MHYAV矿用通信电缆20*2*0....
煤矿用通信电缆MHYV MHYAV
MHYAV矿用通阻燃信电缆MHYAV
煤矿用通讯电缆MHYAV
通信电缆MHYAV2X2X0.8