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When a part of plastic bottle was used, Another part of the space is wasted.The plastic bottle which I designed can adjust height and save space.
Whw we recycled plastic bottles,the problem is that it is hard to carry and occupy space. Using a retractable bottle. Just pressuring it, it can changed immediately into a small bottle which can save the garbage bag and is easy to recovery.
Chongqing University of Science and Technology.School of Humanities and Arts
Chongqing, China
Chongqing University of Science and Technology.School of Humanities and Arts
Chongqing, China