прокладка non woven fa3-слойный дышащий колодки для рот рм2,5 фильтр activate углерода маска для лица pad vyr0

gasket non woven fa3-layer breathable pads for mouth facial mask pad vyr0.1.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.