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KN95 Face Masks

gary49novel (#199) 10 days ago News kn95 masks All https://www.guanmarket.com   Discuss    Add To
All of KN95 Mask usually came with 4 layers of protection. The outer coating was non-woven fabric, middle coating melt blown filter, third layer breathable cotton and final interior coating were non-woven fabric. It has over 95% filtration efficiency.

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