маска уплотнитель четыре слоя водонепроницаемой и дышащий pad рм2,5 маски для лица с активированным углем активировать пыле- и haze proof ма

mask gasket four layers of waterproof and breathable pad dust-proof and haze proof mask replacement pad unisex.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.