Bulk PM2.5 Activated Carbon Filter Mask Inserts 5 layers - 100 Pack

Bulk PM2.5 Activated Carbon Filter replaceable Anti Haze Masks Filter Protective Health Mask 5 layers Insert Filters - 100 Pack

5 Layers Function:

- First layer: spunbond cloth, filter the dust of micron

- Second layer: to filter industrial pollutants, automobile exhaust, second-hand smoke pollen allergies

- Third layer: activated carbon cloth, benzene and a smaller function of filtering dust microns

- Fourth layer: filter density, smaller material

- Fifth layer: Spunbond cloth, filter out all kinds of harmful substances;