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There are many poor children who lack textbooks in Sub-Saharan Africa.
To solve that, the product can clip a non-binding textbook. Once there are several pages damaged or fully written, users can replace them only, which will extend the life span. After buying a textbook, there won’t be new expenditure until the content changes, except for some substitute pages.
Not only can it lower costs per student after more recycle loops, but also governments can offer free textbooks cheaper if they do.