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As a rule, people always feel discommodity when they are using folders.
The reason is that papers often beside together.so "lean-to folder" makes some changes in transparent folder.The profile of the colorized clip become oblique, so that there is a slope on the profile of these papers. When we turn page, our fingers can only touch 1 paper, so that we can turn page by one hand easier.It is also more advantageous to the handicapped people.
ZheJiang University
Hangzhou, China
Tian Lei
ZheJiang University
Hangzhou, China
Jiang Wu,Ningning Zhu,Qianmu Mao