5 слоев рм2,5 бумаги активированный рм2,5 взрослых колодки углерода взрослый ребенок анти haze рот маска анти пыли воздуха famask pad ljjk20

5 layers pm2.5 paper activated carbon adult child anti haze mouth mask anti dust air famask pad ljjk2057.1.the first layer: high efficient filter cloth filter the dust of micron.2.the second layer: meltblown cloth to filter industrial pollutants, automobile exhaust, second-hand smoke pollen allergies.3.the third layer: high efficient filter cloth filter benzene and a smaller function of filtering dust microns.4.the fourth layer: activated carbon cloth filter density, sma.