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The design is based on the idea to facilitate human’s easy finding, playing
an indicative role to lead the start of scotch tape.The design breakthrough is a
rotating plastic ring embedded within the inner ring,on which there is a white
indicating arrow.And the rotating ring's material can select the plastic or rubber.After each using ,you can turn the white arrow to the place where you tear the scotch tape.In the next time，you find the start by this sign.