Most people take the air that they breathe for granted, but are not aware that the quality of air can have a massive impact on their health. indoor air can be five times as polluted as outdoor air. Since indoor air is not circulated as much as the outside air, many airborne pollutants continue to thrive inside. KOIOS air purifier is an effective and cost-efficient way to clean the indoor air for you. It is an intelligent investment in your health, which can help you in removing dangerous contaminants.