BDM-I系列PVC防爆电缆接头价格 BDM-I-G1/2 PVC防爆电缆接头:1.3元;BDM-I-G3/4 PVC防爆电缆接头:2.5元;BDM-I-G1 PVC防爆电缆接头:3.5元;BDM-I-G1.2