лот одноразовые рм2,5 для маски 5 защитных слоев против haze против пыли маска рм2,5 фильтра маска activate углерода фильтра pad

lot disposable pm2.5 for mask 5 protective layers anti haze anti dust mask pad 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.