air purifier No filters to replace Silent, no fan or motor Low power consumption One year warranty air purifier1,Use high-quality enamel casting tube, the oxygen purity, stability, longe-lived; 2,Use epoxy resin, vacuum packaging high-voltage module, resistant to moisture, earthquake, maintenance-free; 3,Modular with plug-in design, easy maintenance, reliablity;4,Use Ozone-specific air pump, ...