Kn95 Face Masks

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What are KN95 masks? KN95s and N95s have many commonalities. The US only approves the KN95s for medical use. This is because N95s refers to the U.S. standard and KN95s refers to the Chinese standard for close fitting filters. During the pandemic in the US, the CDC approved the use of KN95 masks instead of N95 masks … Read more