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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，牐閥，截止閥，止廻閥，鏇塞閥，隔膜閥等。它的材質方主要分：不鏽鋼，鑄鋼兩種。