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the damage the eyes of students, student fatigue, affect students' vision . Whiteness is not more than 85% What is the concept? Whiteness use whiteness meter to measure, in general, 85% below the whiteness of the paper will look yellow, if the raw material is pure wood pulp paper, whiteness around 90%, if more than 90% of Whiteness , the paper may have been added fluorescent brighteners and other chemical reagents. 12 Next

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Title: 2013-2018 Chinese paper stationery industry marketing strategies and investment earnings forecast _gao370827_gao370827 of

Content: 2013-2018 Chinese paper stationery industry marketing strategies and investment earnings forecast report [Original 2013-11-29 8:24:47] Word Count: 2013-2018 Chinese paper stationery industry marketing strategy and investment profit Forecast Report ----------------------------------------------- ---------- publishers 〖〗: the Research Institute of Information〗 〖report No.: 15036〗 〖publication Date: November 2013 delivery 〖〗: EMIL electronic version or EMS Price〗 〖report:

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