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balloon plug / balloon plug

balloon plug
balloon plug

balloon plug
Both ends of the balloon being the same air, open the valve at the upper end of the gas can be extrusion balloon extruded into the lower end inside the balloon, balloon can be different sizes by mouth. Open the valve because of different air pressure at both ends, so the gas flow, the lower end of the balloon is smaller and the cork out of the bottle.

University

Zhengzhou University of Light Indus

Zhengzhou University of Light Indus
Zhengzhou, Henan Province, China

Design

Zhengzhou University of Light Indus

Zhengzhou University of Light Indus
Zhengzhou, Henan Province, China