auto part:

Single-effected/double-effected auto air filter :
Single-effected (white color): particle filtration
Double-effected (mixed color of black & white): ParticleFiltration & Polluted air filtration

Static nonwoven filter core (single-effected) / Activated carbonnonwoven compounded filter core(double-effected)
Enhanced polypropylene plastic frame
Filter core and plastic frame are fixed by plastic injectionmolding directly with compact configuration.

Single-effected filter can eliminate the inhalable particulatematter from outside such as the pollen/particle/microbe, etceffectively to purify the air inside the automobile.

Double-effected filter can eliminate the inhalable particulatematter from outside such as the pollen/particle/microbe, etc, butalso can get rid of the smog smell /toluene/sulfur dioxide suchharmful gas effectively to purify the air inside theautomobile.

particle filtration of Car air freshener