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With the development of the times, the office produces more and more waste paper. How to use them is a question worth thinking about. The design is a combination of A4 paper and a refill, forming a new environmentally-friendly signature pen that can be used in the office or donated to the poor. The principle of this device is to put A4 paper from the entrance, the roller structure allows the paper to enter, and the platform supports the paper in the middle. As the paper moves, the spray glue is stuck to the paper, and the paper enters the pen holder to rotate and adhere to form an environmentally friendly signature pen.