Bulk PM2.5 Activated Carbon Filter Mask Inserts 5 layers - 100 Pack Quantity:500 Pieces Efficient respiratory protection: Filters 90%

Efficient respiratory protection: Filters 90% of particles in the air

nail shops etc

No Individually Packaged

whereas thicker uncoated stocks are used for greetings cards and loyalty cards

which is very extensively used in families

Bulk PM2.5 Activated Carbon Filter Mask Inserts 5 layers - 100 Pack Quantity:500 Pieces Efficient respiratory protection: Filters 90%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