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Used plastic bottles are often used as a litter of people. Phase in the urban and rural areas, where the economy is not developed, you can design a plastic plate with four screw holes, you can rotate the bottle into the hole in the body, forming a small stool. Through their own hands, so that the object of no value to re-play value.
NanJing forestry University
NanJing, China
NanJing forestry University
NanJing, China
Yin Zhao,Jingying Zhou,Li Ling,Jing Han