PM 2.5 Activated Carbon Filter Insert, Replaceable Anti Haze Filter Paper?10 PCS?

How to Use? Step1:After washing your hands,take out the product Step2:place the PM2.5 carbon filter pad in the mouth covering to prevent slipping Step3:Install thePM2.5 carbon filter,fit your face and wear it correctly Features: Material : Non-woven Cloth,Melt-blown cloth. Dimension:4.72" x 3.1" Package Included: PM 2.5 activated carbon filter x 10 pcs Multilayer filtration? The pm2.5 face shield filter is composed of 2 layers of non-woven fabric, 2 layers of meltblown cloth and 1 layer of activated carbon cloth. A Multi-layer replacement air filter gives you. Filtration technology: made of activated carbon and non-woven melt-blown filter cloth, five-layer filter system effectively keep away from PM 2.5 and a range of airborne contaminants. Please note: 1. Filter insert can not be cleaned and should be replaced every 3-4 days 2. When film or sticky sediment stains emerge, please replace the filter 3.If any question, leave us a message, we will keep in touch with you