1, Patent active carbon combination filter in physics. 2, Cold catalyst decompose in chemistry. 3, Patent unbalance plasma ion (/Ozone) sterilize in biology. (Ozone as option, Ozone is harmful for mankind, ensure no one in the car during Ozone antivirus, and open window for airflow for 10 mins before moving into the car) 4, Dried flower natural fragrance. standard export carton, 20 pcs/CTN
