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Joint folder / Joint folder

Joint folder

ordinary folder can hold small amount of papers, while they will be less helpful when overly large amount of paper or organizing is needed. Adding a groove and a heave on sides, each folder which can link folders together will facilitate storage and organizing.


Zhengzhou University of Light Industry

Zhengzhou University of Light Industry
Zhengzhou, China

YunHao Zhang,
Zhengzhou University of Light Industry