kn95masks.org has sufficient kn95 masks resources and cooperates with FDA kn95 manufacturers.

KN95 masks are currently tested and regulated by the Chinese government, under the regulations GB2626-2006, GB2626-2019, and GB19083-2010. 
 
KN95 masks are tested for their respiratory protection and filtration efficiency, just like the N95 masks. KN95 is globally available and used. And FDA has issued an emergency use authorization letter for the Chinese KN95 masks. 
 
Just like the N95 masks, KN95 masks have more or less 95% filtration efficiency

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