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It is troublesome and tricky to cut a double coated tape to the width you need when it is wider than the object it sticks to. In the past, some user bring addiotional double coated tape of different size, but it take up space."One-Equals-Three"avoid these inconveniences. The unique dotted line cutting allows user to easily split it up to get three different width: large、medium、small. Through this design users just need only one roll of double coated tape to have different sizes of double coated tape.
National Cheng Kung University
Tai-Shun Huang, I-Ting Hsu