одноразовая маска pm 2.5 активированных рм2,5 взрослых колодки углерод 5 layers колодки для поставок защитных лиц для детей для взрослых мас

disposable mask pm 2.5 activated carbon 5 layers pads for protective face supplies for kids adult mask ffa3932-7 features: 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.