одноразовая защитная маска рм2,5 фильтр активировать угольный фильтр маска внутренняя pad рм2,5 pad 5 слоев ватным тампоном free ship

disposable protective mask inner pad pm2.5 pad 5 layers of cotton pad free ship 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.