... air purifier for home use 2.Use Ozone-specific air pump 3. high quality ozone air purifier HIGH QUALITY AIR PURIFIER FOR HOME USECold catalyst,Anion,numeralAutomatic,Silent ... Packaging:5 piece/CartonNegative ions:ozoen generator (ozoniser):1,Use high-quality enamel casting tube, the ... maintenance-free; 3,Modular with plug-in design, easy maintenance, reliablity;4,Use Ozone-specific air pump, longe- ...