Three main models are accessible to customers The Olansi Ionic Humidifier as well as the Olansi air purifier The Olansi ionic cleaner air generator. Three models provide There are numerous benefits available to consumers. One of the benefits is the potential to The purifiers cut down on noise in rooms by removing most of the pollutants. external noise. Ionic humidifiers are highly advised. Use in bedrooms as it helps reduce the sound of fans and air ACs. The unit is very quiet under these circumstances.