High electrostatic plate traps the dust, pollen, smoke etc, as small as 1 micron circulated in the air. FeatureHigh electrostatic plate traps the dust, pollen, smoke etc, as small as 1 micron circulated in the air.Easy maintenance: just wipe the dirt down from the dust collector rod with a cleaning cloth.Releases high-density negative ions to purify the surrounding air-------Negative ions ...