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The Bottle Cap to Save life is made from PC plastic . Each layer is connected by helicitic , so it is convenient to tear down and wash . Resident can use the material that is easily found in the daily life , such as cotton , scree , activated carbon and so on , to make a simple filter through loading the corresponding layerred in sequence. The most of the sediment and bacteria can be filtered from filter . It can reduce the chances of infections.
Zhengzhou University of Light
Jinshui district of zhengzhou city, China