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BOOK-MARKER is both a bookmark and a pen.
As we usually get a pen to make some marks while reading,and when
we need a pause,we may use the pen as a bookmark.But the pen
often makes the book out of shape and unconvenient to carry with.
On the other hand,the bookmark is actually unoccupied while reading.
Book-marker well combines the bookmark and the pen.
It makes it more convenient to read a book and stop to move.
At the same time,it reduces the use of plastic in produce pens.
Zhejiang University
Zijingang Campus
Hangzhou, China
Ying Fangtian,Luo Shijian,Zhang Xusheng
Zhejiang University
Zijingang Campus
Hangzhou, China