KN95 protective mask, meeting standard GB2626-2006 and standard EN149:2001+A1:2009 FFP2, is composed of 5 layers：surface layer, two melt-blown filtering layer, hot air cotton layer, inner layer. nasal splint. and mask bandage. The surface layer and the inner layer are made of non-stick non-woven fabric. The filtering layer is made of BFE99% （50 grams）melt-blown non-woven fabric. The nose clip is made of bendable aluminum. The mask bandage（ear loop）is made of elastic material. It can be used to protect particles, PM2.5, dust and haze. The filtration efficiency of non oil particles is at least 95%.
