Cabin Air Filter ( automobile air filter, car air filter ):
Single-effected (white color): Particle filtration
Double-effected (mixed color of black & white): Particle Filtration & Polluted air filtration

Static nonwoven filter core (single-effected) / Activated carbon nonwoven compounded filter core(double-effected).
Nonwoven soft frame.
Filter core and frame are fixed by heat sealing machine.

Single-effected filter can eliminate the inhalable particulate matter from outside such as the pollen/particle/microbe, etc effectively to purify the air inside the automobile.

Double-effected filter can eliminate the inhalable particulate matter from outside such as the pollen/particle/microbe, etc, but also can get rid of the smog smell /toluene/sulfur dioxide such harmful gas effectively to purify the air inside the automobile.