рм2,5 mouth прокладка фильтра маски anti-dust прокладки фильтра маски многоразового фильтр колодка маски с дыханием клапана k моющегося mout

pm2.5 mouth mask anti-dust mask reusable mask with breathing valve k washable mouth fapad in stock.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.