Exclusivly Sold by 'The Smart Lyfe' Meets or Exceeds KN95 Executive Standard: GB2626-2006 Filtration Efficiency Tested by an Accredited Laboratory by CNAS for Testing of Masks True 5-Ply Protective Layers (2 Polypropylene Non-Woven Layers, 2 Meltblown Filter Cloths, and 1 Non-Woven Cotton Middle Layer) Each Box Contains 50 Sealed Genuine KN95 Earloop Masks (Packs of 10) Features Secure Embedded Adjustable Nose Clip Lightweight & Foldable Design for Portability Includes Optional Earloop Clips for Additional Adjustment This Product is Not Included on the FDA Emergency Use Authorization List, and the CDC Has Not Confirmed its Filtration Efficiency. Designed and Manufactured by Kingfa Science and Technology Kingfa Science & Technology was founded in 1993. After 20 years of rapid developments, Kingfa has grown into a world leading company in the new-material industry