air purifier No filters to replace Silent, no fan ... with plug-in design, easy maintenance, reliablity;4,Use Ozone-specific air pump, longe-lived and good stability; ... , easy to distinguish, more health; 9,Small space, water, gas dual-use, simple operation, can be standing or ... :1) Only put the meat, fruit vegetable into the ozone water mixture for 20minutes, can kills pesticide leftover, germs, bacteria ...