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Pop-Green / Pop-green

Pop-Green
Pop-Green

As a part of this environmental friendly world,reading books is a common activity among people.but marking pen without a cap near the book make a problem appear.The pen cannot be use any more after a night time without cap or less,the ink was completely dried out.The Pop-Green is the key to this kind of problem,the point will draw back to their body once there.

University

Xiamen university technology

Xiamen university technology
Xiamen, China

Jason Hu,
Xiamen university technology