常見例句Various types of valves: ball valves, valve plates, valve, closing valves, check valves, Xuan Sefa, Gemo Fa, and so on. It's the main material: stainless steel, cast steel two. 閥門種類多樣:球閥,碟閥,閘閥,截止閥,止回閥,旋塞閥,隔膜閥等。它的材質方主要分:不銹鋼,鑄鋼兩種。 返回 Gemo