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Ecto-Thermic Sticker / Engilish

Ecto-Thermic Sticker

often drinks which is not at the proper temperature to the mouth,teeth or esophagus will easy do harm to then. The sticker’s color changes as the water temperature changes. Normally the color is blue but it will turn to red when the temperature is higher than 65 while white when the temperature is below 5 to warm that it is not suitble for drinking.


Chongqing University

Chongqing University
Chongqing, China