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3ply face masks, FFP2, FFP3, KN95 masks are professional. We register an Medical license in March of 2020.

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Oct 15, 2020 · An N95 mask protects you from 95% of airborne vapors, but if you want to give yourself even more protection, this half mask respirator is a good step

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KN90 respirators are respirators that meet a China government standard that requires lower filtration efficiency performance (at least 90%) than NIOSH N95 (at least 95%). While KN90 respirators are a form of respiratory protection, the amount of exposure reduction they are designed to provide is lower than the minimum amount that U.S. OSHA and 5 Best N95 Masks - Oct. 2020 - BestReviewsA quality N95 mask needs to form a tight seal around your lower face to be effective. This seal can be tested for both positive and negative pressure. When the wearer inhales deeply, a properly fitted N95 mask should draw inward. This indicates good negative pressure. When the wearer exhales, the respirator valve should open smoothly.

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