MHYAV矿用电话线MHYAV-20...
MHYAV矿用通讯电缆20*2*0....
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