на складе дышащие открытый колодки рм2,5 крышки одноразовые рм2,5 activate углерода маски фильтра face mask 3 слоя

in stock breathable outdoor pads pm2.5 cover disposable face mask 3 layers 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.