PM2.5 Mouth Mask Tpye:Filter Lead Time: Quantity(Meters) 1 -

Lead Time: Quantity(Meters) 1 - 10 11 - 2500 >2500 Est

thiamine mono-nitrate

Thermal Insulation Cotton

Material: Nylon+Fabric

Unique design in Door zipper junction

PM2.5 Mouth Mask Tpye:Filter Lead Time: Quantity(Meters) 1 -RM17744605847505433 PRODUCT DETAIL: The Replaceable Filter has a five layer structure that provides professional filtration. The first layer of spun bond filters out micron sized dust; the second activated carbon filter layer filters benzene and automobile exhaust. The third and fourth layers filter out 0. 03 0. 3 microns of dust and particles. The fifth layer of spun bond filters out various harmful substances FEATURES: Plastic nose piece,