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pen / pen

pen
pen

Pen and books often buckle together, but now the buckle method is not good
So we usually put the pen directly in the book, which shortens the book or workbook’s life.
To bend the steel by hitting, the pen can buckle the books with any thickness.

University

China Academy Of Art

China Academy Of Art
Hangzhou, China

Design

China Academy Of Art

China Academy Of Art
Hangzhou, China

Xu Sun,Yuanfei Zhou,Wenjuan Liu