1pcs air mask fiters haze и пылезащитный одноразовая маска рм2,5 фильтр рот activate углерода маска pad рм2,5 дышащий сменная filte горячие

1pcs air mask fiters haze and dustproof disposable mask pad pm2.5 breathable replaceable filte hot 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.