50 шт фильтр рм2,5 box маска для лица pad нетканые haze маска замена универсальная защитная сменная рм2,5 маска здоровье

50 pcs box facial mask pad non-woven haze mask replacement universal protective replaceable pm2.5 mask health.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.