... nanometer activity Ionizer‘,control Microbe grow;,dispel pollutant of air.disease control center test dimension China disease ... room work on 1h,2h,3h ,die rate of nature bacteria in air is 92.21% 94.01% ... ion for body 7system,almost more than 30 kind of disease can restrain , remission and Adjuvant therapy ... room ,let you can enjoy fresh air like nature in home. After test ,XiTian air cleaner work ...