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Two-sided adhesive tape is a useful tool in daily life and work. There are still some problems involved in the using of the current one, for example, it is not easy to tear the tape and depart paper from glue. The Useful Edge would overcome these shortcomings by a small modification on the edge of the tape, allowing easy tearing and departing. This makes it convenient and efficient for use.The wave-shaped edge without glue allows a small space for finger to pull the paper apart from the glue, after it is pasted on certain surface. At the same time, the wave shape is convenient for tearing the tape at any length.