10 20 50 маски рм2,5 активировать угольный фильтр шт одноразового хлопок маска для лица pad рм2,5 маска

10 20 50 pcs disposable cotton facial mask pad pm2.5 face mask 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.