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The dustbin is made from soft plastic material , and it can open in four corners at a certain angle when squeezed , to increase the capacity of the filling. Bags can be put in the four openings separately areas, thus a trash can used for garbage sorting.
Xiaowei Wu，Caixiang Ding，Rufeng Dai，Ziyun Yan，Dunqi Lu，Wenjie Zhang，Dawei Pan，Huanghao Jin，Qionglei Zhu