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ETT is a new type sellotape. There are 8 small triangular openings on one side. The space between two openings is the length that people usually adopt. Of course, we can choose the length according to our own need. Such a design solves the difficulties in tearing sellotape. In addition, it also brings convenience to people, because they dont need to carry a hulking knife about.
zhejiang sci-tech university
fei zhang,lailai yu,wanli chen