矿用防爆电话线MHYV-1*3*1....
MHYV 2*2*7 0.28矿用监...
矿用通信电缆MHYV 3×2×0.5
阻燃矿用电话线MHYV-1*2*7/...
MHYV 煤矿防爆电话线
MHYV矿井用阻燃通信电缆