N95 VS KN95 Face Mask: How to Choose? | GearBest Blog
Apr 13, 2020 · N95-1804/1805: economical folding medical N95 mask, very portable, 1805 is an old version, is being replaced by 1804, and 1805S and 1804S versions are suitable for people with small faces. For the protection of bacteria, the protective effect of a medical N95 mask should be the best.
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