煤矿用通讯电缆 MHYVP
矿用通信电缆MHYVP
MHYVP煤矿用护套通信电缆
MHYVP-2*2.5+2*0.75...
MHYVP通讯电缆1x4x7/0.5...
MHYVP矿用阻燃信号电缆煤安证