famouth муфельная аксессуары сменная 5 layer anti-dust рм2,5 активированного угля pad в рм2,5 реактивировать угольный фильтр маски рот шток

famouth muffle accessories replaceable 5 layer anti-dust pm2.5 activated carbon pad in stock.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.