二通内螺纹铜旋塞阀[X13W-10T]
BJ41Y锻钢保温截止阀
X43W二通全铜旋塞阀
二通内螺纹铜旋塞阀[X13W..
BJ45H直流式保温截止阀
J11W内螺纹截止阀
DSJ41H法兰式水封截止阀