MHJYV矿用电话线
MHJYV加强矿用通信电缆
矿用通讯电缆MHJYV-1*2*7/...
MHJYV 1*4*7/0.28 0...
MHJYV矿用爆破线2*2*1.5;...
MHJYV,1*2*7/0.28,矿...