обувь famouth маска pad 5-слойный ред активированный рм2,5 фильтр с активированным углем маска пыли ткань углерода mask pad

shoes famouth mask pad 5-layer ed activated carbon mask pad.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.