3layer против пыли активировать угольный фильтр маска для лица рм2,5 дышащий рот fareplacement удобная маска pad vamn 8cnp

3layer anti dust breathable mouth fareplacement comfortable mask pad vamn 8cnp.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.