CPVC承插球阀,活结球阀
UPVC/CPVC气动蝶阀,生产,耐腐蚀
CPVC法兰球阀,球阀
cpvc旋启式止回阀,cpvc旋启式止回阀生产,耐酸碱
UPVC/CPVC电动蝶阀,耐腐蚀
cpvc涡轮蝶阀,直销
cpvc隔膜阀
cpvc蝶阀,cpvc手柄蝶阀,耐腐蚀