одноразовая маска для лица pad прокладка 5-слоев для рм2,5 сменного фильтра с 5 activate углеродом 2.5 маски анти-смог загрязнения пыли

disposable face mask pad gasket 5-layers for 2.5 anti-smog dust pollution mask features: 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.