анти- 3 слоя s pad рм2,5 для маски защитная маска замена загрязнение анти одноразовая нет нетканые сек маска 2020

disposable mouth mask 3 layer non-woven dust mouth cover pad adult child disposable 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.