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The design ,ingenious,which is printed circle 0-9 with the “scratch silver” in the bottom of each disposable paper cups ,when people get their own disposable cups and scratch one figure which is different from others,the color background that covered by the scratch silver will be exposed ,and it iseye-catching.
Just remember the numbers that you scratch, you can easily find your own cup even if a lot of cups mixed together,thus avoiding such unhygienic by the cups mix with each other. The disposable paper cups can be distinguished even if a large munber in the party because the number of 0-9 can be arranged in many ways.
Shaanxi University of Science and
Hao Ling Chao Ren Peng Zhou Yan Fengchang