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wanted to make the garbage becomes more flexible and simple. It consists of a ring of columns and two iron boxes which constitute one of the most fundamental of the trash, and each adding a "tie box" would be tantamount to a category barrel. of course, the iron box between is free to change the angle which can solve the above problem and placed restrictions, such as not susceptible to various corners of flexibly adapted to home or some other place.
Zhongkai university of Agrieulture and Engineering
Rongsheng Yang Xiaoqin Cao Gongyuan Li Zili Li