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Before , people to add ink pen will upsetting , carelessly hand was dirty and wasted napkins. And this design can join
in pen tail ink.1: making people operation more convenient.2: also saves ink.3: increased pen store ink volume.
Jiangxi University of Finance and Economics
NanChang City,Jiangxi Province, China
Yaosheng Mao Hongxing Xiang Bo Guo Ermao Deng