放泄阀
铸钢自闭式放泄阀
LIANXIREN：FANXIANSHENG
SHOU JI：/
GONG SI：JIANGSUKAITONGCHUANYONGFAMENYOUXIANGONGSI
DI ZHI：JIANGSUSHENGJINGJIANGSHICHENGBEIYUANQUXINJIANBEILU35HAO
