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Automatic timing mask / Product

Automatic timing mask

Every time we put on the mask, we need to count the time. This is a very troublesome thing, while this product will solve the problem.
It uses the principle that when the polyphenols are exposed to the air, they will change color over time, Just as the apple. So here we use polyphenols to design patterns on the mask ,the patterns will appear slowly to tell the time.

University

Zhejiang university City College

Zhejiang university City College
Zhejiang Hangzhou, China

Pan Xueyi,
Zhejiang University City College