pad pm2.5 ygp9j carbon original filter facemask activate designer woman haze for man and face m fopn

ygp9j pm2.5 pad designer woman haze for man and famask non-woven o.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.