Joint sealant gasket of expanded PTFE made of pure PTFE is a continuous low density cord.

膨胀聚四氟乙烯密封胶带是用聚四氟乙烯制成的低密度密封材料。

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Joint sealant gasket of expanded PTFE made of pure PTFE is a continuous low density cord.

膨胀聚四氟乙烯密封胶带是用聚四氟乙烯制成的低密度密封材料。

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