... Purifiers fixed on the air-ports of the AC system is specially designed for the cleaning of returning and circling ... spare parts include, Activated Carbon Filter Screens, Cold-Accelerant which is functional for removing the Sulfid, BHC, NH3, HCHO, and ... N electron, collecting plate absorb the dust, kill bacteriawindage be equivalent to low filter screens. small windageFilter 95% dust, bacteria(tiny ...