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When we drink bottled drinks, straw always fall into the bottle, it is inconvenient to salvage and use, if straw have a floating ring like swimming circle. Straw can floating out of the bottleneck automatic that drinking is more convenient and hygienic.
This device have the same principle like "Swim Ring", it contains the few air, so that straw lock with it, straw can be floating.
National Cheng Kung University
I Jui Lee