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We use a huge number of memos every day and they are just thrown into dustbins with only one side used. It is a severe waste of paper resource. The double memo pad tries to tell people to make full use of both of the memo sides before throwing them away. You can stick each of the two sides. Just use the other side before you want to throw it away, which contributes to resource protection and a sustainable society.
Technology University Eindhoven
Mingwei Zhang Jianfeng Jin