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-V STRAW / straw

-V STRAW
-V STRAW

The central groove in it aerate itself greatly.Therefore, the liquid inside won't be spilt by the air pressure.

University

University of South China

University of South China
Hengyang City of Hunan Province, China

Huang Peijin,
University of South China

Dai Huiling,
University of South China

Pan Siyu,
University of South China

Zhou Jun,
University of South China