Refresh O2 Zone / product

While the subway, underground markets and the like are increasing gradually, we're undergoing the modern diseases such as dizziness, emesis, and so on, but we don't really realize the serious problems.
"Refresh O2 zone" gives us a fun of stepping on the floor and by doing this, we can get the highest state of piezoelectric effect and it creates more oxygen.
If the number of people passing by it increases , the whole amount of oxygen will be increased at the same time, so it offers fresher environment.
Plus, one can see the emitting oxygen through the display and they can also breathe it in at the same time.