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Print the contours for rulers, protractor, pens inside of the cartons，and you can get a set of stationery by cutting along the dashed line.
It can fully meet the needs of study by giving you 30° right angle triangle，45° right angle triangle，ruler，protractor and pens.
This design accompanies with the loading of medicines and food cartons, and finally offers the poor children with free stationery by reuse the cartons, which is both environmental protecting and transportation cost saving.
Jia WU Fan YANG Minghui JIANG Haolin XUAN