Gravity Trashcan by YAO, YU-LONG from taiwan

The base and the cylinder have a elastic systems,when the weigh become heavier.It will move down,but when the weigh become lighter.
By Earth's gravity,full trash can solve problem.
When the staste are full,trash covered under the rose design,improve
the anount of garbage,convenient cleaning and styling changes to the
user's habits do not develop green energy environment.