... YOU CLEAN YOUR DIRTY AIR1. Precise dust removal material used for experiment; Obliterate dust.For the room dust ,we select HEPA (high efficiency ... which need high clean place. It can clean 99.7% dust ,and can filter almost 100% for smoke and gasoline. ... for adjust temperature, check smoke and foreign odor automatic, clean dust, dispel foreign odor and harmful gas, double sterilizing, release ...