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People can drink water by using Vacuum cups all the time, but usually after twit-off the cup cap, several drops of water will run along the outer-wall of cups, an unpleasant water line leave on the newspaper
This design is to add a small aperture on the cup, thus water will directly drop into this aperture and effectively avoid the water line.
Sichuan Normal University
Department of industrial design
ChengDu, China
Sichuan Normal University
Department of industrial design
ChengDu, China
Siji He/Zuolin Wu