InterMaskTM KN95 Face Mask, 12889-001, Protective Mask, consists of a mask body (made of non-woven fabric, hot air cotton and polypropylene melt-blown fabric) and a mask belt (elastic non-woven fabric), prevent dust, haze, direct penetration of pathogenic microorganisms, body fluids, and particulate matter provides a physical barrier.Its Particle Filtration Efficiency (PFE) is >99%, ph Value is 6.5, 5 Layers and with FFP2 standard Breathing resistance.Length: 234 mm (+/- 1cm), Width: 136.7 mm (+/- 1cm). GB2626-2006 / FFP2 certification. Packaging information: 2000 pcs / case; 50 pcs/ box/polybag.Case size:65.6x52.5x53.2cm. With CE/CHINA Certificate