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One hand is enough! You can keep your hands clean!
On the process that you though rubbishes, your hand s easily get dirty. We want to solve this problem to that people through rubbishes easily and keep their hands clean. We use repulsive force between tray and rubbish bin.
If you hold a tray with one hand and close to rubbish bin, the door will be open itself because of repulsive force. This process will help customers hands keep clean.
Busan, South Korea
JUNG WON UM,
SANG WOO LEE,