KN95 Mask 11 Things You Need to Know Before Buying how to distinguish between kn95 masks
Jun 30, 2020 · The KN95 masks are multi-layer masks, that usually feature 5-layer protection. The layers are made from high-quality, nonwoven fabric, hot air cotton, and melt-blown fabric. The nonwoven fabric is hydrophobic, and is water- and droplet-proof. Moreover, the hot air cotton is soft and ensures lower air velocity.
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