на складе 2020 5 слоев активированного угля маски фильтра рм2,5 сменная s рм2,5 анти haze пыли fareplacement колодки

in stock 2020 5-layers activated carbon replaceable s of pm2.5 anti haze dust fareplacement pads.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.