лицо рот муфельные аксессуары сменная 5 layer anti-dust рм2,5 активированный уголь рм2,5 маску с activate углем pad на складе

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