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Asdfgh mark this message contains personal perspective
originally written by Asdfgh
「電鍋乾蒸法」可使口罩復活,但重複乾蒸使用5次後,過濾效力減損就需丟棄。

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https://www.cna.com.tw/news/ahel/202002100225.aspx
過濾效力減損就需丟棄
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