... .m Hot-sell Hepa anion air purifier with 500mg ozone and remote control 1.ozone purifier2.anoin purifier3.CE,ROHS,FCC,CQCcertification4 ... caused in the air.4) Increase inner room oxygen content and generate healthy negative ion to improve the indoor air qualityFeatures ... high air current design of purify machine. Micro computer control, four-lay filter and over oxygen device, with high level, mid-level ...