рм2,5 фильтр маски рм2,5 activate углерод сменная 5 слойная маска для лица pad с активированным углем маска сек дыхания рот муфельной вставк

pm2.5 replaceable 5 ply face mask pad with activated carbon mask s breathing mouth muffle insert cca12039 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.