... , ozone 5mg/h car ionizer car air purifier of multi technologies Product Usage:Car, auto, bus, automobile and office etc. ... 3. Plasma (Anion) air purification:Adopting plasma solo patent technology, it can produce both positive ions and negative ions, Eliminate dust ... , deodorize various unpleasant smells, prevent bacteria virus spreading. And it can work without any second pollution or side effect as ...