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This is a stroke pen designed for designers and the people who like painting.
This pen can adjust its nib easily by turning the grip ,and then you can draw
different width of lines.Six white lines on the penholder which is not only a decoration but also as the reference line.
Ningbo Institute of Technology ,Zhejiang University
Ningbo Institute of Technology ,
Chunfang Lu Chenyang Ji Fuyi Jing Xin Chen