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When ordering beverages at fast food places: Large-sized beverages are not stable on the tray, especially to children. One’s quick movements may cause the cup to fall on the floor and spill. Wet floor cause danger to other customers.
The solution is to keep the steadiness of the cup with the tray. Even when one loses balance, the cup will not fall. With Steady Tray, dining at fast food places becomes a more enjoyable experience.
National Cheng Kung University
Tainan, Taiwan
National Cheng Kung University
Tainan, Taiwan
Meng-Hsueh Hsieh