оптовая серия одноразовые рм2,5 для кожи маска уплотнитель маска pad предотвращение fog маска замена pad анти пыли

dust proof anti haze disposable replace inner pads for mouth mask if the mask is not replaced for a long time the 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.