одноразовые рм2,5 маски для лица колодки 3 layers дышащей маски прокладки против пыли рта рм2,5 маски замены pad

50 pieces disposable mouth mask gasket anti dust and spray mask mat replaceable 3 layers breathable insulation pad 1 bo masque ffp2 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 filt