3-Ply Surgical Mask | Sterile | Medical Use USA Standard: FDA, LYU, General Surgery EU Standard: EN 14683 + A1:2009 China Standard: YYT 0969-2013 Type 1, bacterial filtration efficiency Microbial cleanliness â?¤ 30 BFE 95% Sterile, package of 20 masks Three layers of protection 1. Moisture proof non-woven fabric 2. Melt blown or electrostatic cotton 3. Skin Friendly non-woven fabric NB: Printing on masks/packages per standards (CE and FDA)
