ねじ式青銅酸素遮断弁
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どの会社でねじ式ブロンズ酸素遮断弁や、低温用ねじ式ブロンズ長軸遮断弁を扱っているか教えてください。よろしくお願いします！ QQ:496785844までご連絡ください。
ステンレスを使いましょう。青銅は見つからないでしょう
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