famouth маска рм2,5 сменного фильтр прокладка 3 слоя анти пыль маска коврик хлопок сердечник сменная дышащий маска рм2,5 сменный фильтр

famouth mask gasket 3 layers anti dust mask pad cotton core replaceable breathable mask gasket.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.