Home Appliances Design Air Touch Air purifier by CHANG-YU PAN As the process of purifying the air goes on, the absorbed particulate matter will turn filter element grey and it looks like the previous beautiful landscape is fading away in dusky “sky”. In this case, people can alter the filter element in time. A brand new air purifier is created thanks to its visualization and interaction. The unique point of Air Touch is to visualize the particulate matter in the air so as to observe the gray tone changes of the filter element in a more bright and direct way. This idea makes visualized filter element possible to the show itself.