mascarillas desechables обувь famouth маска pad 5-layer рм2,5 сменный фильтр-е изд activatpm2.5 сменный фильтр ред углерода mask pad

mascarillas desechables shoes famouth mask pad 5-layer ed activated carbon 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.