????????????????-???????????????????? ????????????????????????????????????????: Experience HEPA-level filtration when paired with Dreo Air Purifier 539/539S White (DR-HAP009/009S White) in Sleep Mode. Tested by a third party using Air Purifier 539 (DR-HAP009) at the lowest fan setting.
This air purifier would be a great fit for homes where multiple sources of indoor air pollution exist, due to its 3-in-1 high-efficiency filter.
