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      • Q41F-25,Q41F-40液化氣球閥

        Q41F-25,Q41F-40液化氣球閥

        Q41F-25,Q41F-40液化氣球閥采用特殊成形的特氟隆填料,適用于大多數高中壓氣體輸送場合,手柄操作力矩平衡,O形圈用來防止外部雜質進入閥門內部,并保持閥門的長期密封性能

      中文字幕午夜福利_蜜芽国产成人精品区_中文字幕一区二_久久久久无码国产精品一区
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