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This water ladle is designed for poor areas where the families often share the same water ladle. And their mouths often touch the same spot on the water ladle,which is easy to cause bacterial cross infection.
The "Rainbow" consists of several different patches of color, each family member has his or her own color.In this way, the spread of bacteria can be reduced.It also means that each family member is a color , they constitute a beautiful rainbow, a happy family together.
Beijing Institute of Technology