взрослый ребенок маска колодка 5 слоя цикл рм2,5 activate углерод маска фильтра с активированным углем пыль защитного коврика анти haze рот

adult child mask pads with activated carbon dust protective mat anti haze mouth replaceable s pm2.5 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.