lyka distribution kn95 face masks - 50 pack - 5 layer protection breathable kn95 face mask - filtration>95% with comfortable elastic ear loop | non-woven polypropylene fabric lyka distribution 5 layer protection kn95 breathable face mask (50 pcs) – protective filtration with comfortable elastic ear loop | non-woven polypropylene fabric. <br><br> our kn95 disposable face masks<br> certificates - these kn95 masks were manufactured in an fda certified factory. <br> testing report - these kn95 masks passed "gb2626-2006" testing. the testing results for these masks averaged over 99% (the requirement is 95% or greater).<br> bfe report -these kn95 masks passed the bfe testing report, with an average of 99.9%.<br> filtration levels - these kn95 masks have 5 layers of protection, instead of the industry standard 4 layers. <br><br> important notes:<br><br> these kn95 masks, were personally watched over during their whole production process by my team. we literally took hundreds of production samples and tested them over the course of 2 weeks, while our order of kn95 masks were being produced. most sellers on the internet right now, are selling you goods that they bought from a third party or a factory they have never even heard of or been too. my team, lived on site from the beginning of our order, to the end of the order. i can confidently say, that these masks are rated to perform at the highest standards.