анти пыль активировать угольный фильтр колодка рм2,5 famask к коврик маски загрязнение анти моющихся дышащего d gray к. рот маску клапан d g

anti dust pm2.5 famask k pad mask anti pollution washable breathable d grey k mouth mask valve d grey k mouth-muffle.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.