carbon pm2.5 with activate dhl ship filter lot facial haze mask universal protective replaceable pad for all face qahyzw9lqy

lot facial mask pad haze mask universal protective replaceable pad for all face k.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.