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Ellipse bottle cap / Ellipse bottle cap

Ellipse bottle cap
Ellipse bottle cap

In our daily life,there are always song situation that we couldn't unscrew the caps of mineral water.
Now,change the normal caps which are made as circle to ellipse caps.The thumb finger and the index finger can better contact the caps.It aim to unscrew the caps of mineral water easily.

University

Nan Chang University

Nan Chang University
Nan Chang, China