消防管件密封圈-Weifang Shengde Plastic Co., Ltd.

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消防管件密封圈18660653311

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密封件需要避開楊晃強射，避免密封件被空氣中臭氧侵蝕或者提早老化，各種密封性能影響因素不同，如機械密封圈影響因素有溫度、戒指、磨損、所承受壓力等。

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