дышащий face mask рот pad рм2,5 маски фильтр activate углерод 12 * 8см рм2,5 5-слойный éd из активированного угля одноразовой маски pad

breathable face mouth mask pad 12*8cm pm2.5 5-layer ed activated carbon disposable 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.