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A new type of thermos cup / thermos cup

A new type of thermos cup
A new type of thermos cup

We use vacuum cup after drinking the water, put it ,and it's easy to spill water.This is due to the smooth glass wall, the water resistance is small, so the water splashed out easily. And I designed this kind of glass, make its inner concave and convex, increase the friction of the glass wall, thereby impeding the flow of water.

University

Chengdu University of Technology

Chengdu University of Technology
Chengdu, China

倩 刘,
Chengdu University of Technology

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