N95 Niosh-Approved Masks are masks that have obtained the mandatory safety standards for respirators in the United States. This standard can only be passed by the EPA (a federal agency that has passed the N95 standard).N95 Niosh-Approved Masks said that under the testing conditions specified in the NIOSH standard, the filter material of the mask has a filtration efficiency of 95% for non-oily particles (such as dust, acid mist, paint mist, microorganisms, etc.).
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