What does the KN95 mask mean for us? 2023-02-27
In addition to the filter efficiency of the KN95 mask, the density of the mask and face is one of the important factors determining the effect of the mask. Different types of masks show great differences in their suitability for the human face. Therefore, when using KN95 masks, the suitability of the masks should first be tested. When checking the tightness of the wearer's face, ensure that air can enter and exit through the mask when it is close to the edge of the face. Let's read the following words and get more information about the KN95 mask.
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