готовый сток 10 activate угольный фильтр не ткать рм2,5 20 маска прокладка pad для маски замена универсальная защитная дышащая заменяемое

ready stock 10 20 mask gasket pad for mask replacement universal protective breathable replaceable mat.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.