маска замена колодок fiters анти мутность пылезащитный рм2,5 маска фильтрующий сменным сек пыли маска accessoris розетка

mask replacement pad fiters anti haze dustproof pm2.5 replaceable s dust mask accessoris outlet.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.