With Orange Tower's negative oxygen ion energy coating brushed, the space can be able to release ecological negative oxygen ions sustainably, remove air pollutants effectively, wipeout the spread of germs and prevent possible cross-infection when children gather. As if you are in the primeval forest during the Smart-play. Breathe fresh air in and out freely! You can also put forest-like air to take home! Hotline: 400-153-5161