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This product, time pen, is design for the examination and other timing related needs. Having the timing equipment, fixed on the end, is the main feature of this item. It can be set within 3 hours to remind the user of the time. Clockwork is used in the time equipment, making this item easy to be product and promoted in market.
Jiangnan university
WuXi, China
Jiangnan university
WuXi, China
Zhou Fei
Zhang Bin
Zhu Chunxiao