POLYESTER NON-WOVEN FABRIC： Blocks large particle dust. _x000D__x000D_
ACTIVATED CARBON ADSORPTION LAYER： Effective adsorption of odor. ELECTROSTATIC. _x000D__x000D_
MELTBLOWN FILTER LAYER：Physical adsorption. electrostatic adsorption. _x000D__x000D_
Filtration of oily and non- oily particulate matter. _x000D__x000D_
STEREO-SHAPED COTTON：For better stereotypes and support for stereoscopic. _x000D__x000D_
3D design.