不用线缝的布口罩,没缝隙,可换过滤材料,5分钟DIY
Since this design seals the gaps that often result on the sides of ordinary cloth or surgical masks, it would be comparable to an N95 mask.
不用线缝的布口罩,没缝隙,可换过滤材料,5分钟DIY
Since this design seals the gaps that often result on the sides of ordinary cloth or surgical masks, it would be comparable to an N95 mask.
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