... nanometer activity Ionizer‘,control Microbe grow;,dispel pollutant of air.disease control center test dimension China disease ... B38 dimension: 1.In 30m3 test place, the rate of formaldehyde clean is 93.7%,clean air quantity ... h In powerful mold ,air particulate matter 2 hours rate of clean is greater than 99.9% , clean air ... In 45m3 room work on 1h,2h,3h ,die rate of nature bacteria in air is 92.21% 94. ...