... activity Ionizer‘,control Microbe grow;,dispel pollutant of air.disease control center test dimension China disease control ... 3h ,die rate of nature bacteria in air is 92.21% 94.01% and 95.45%3. work ... for many old men and children. Xitian air cleaner clean air ,at the same time ,it can release ... mute sounds working. 3 Automatic function design, display air quality in the room automatic 4 LED display, ...