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Some fresh ingredients in our life... We need to put in the dry preservation box.... The food is fresh or not it's easy for normal people just at a glance... But it is very difficult for the blinds... They can not be directly perceived food is fresh or not... Blind crisper is designed for the blinds... Put the food into the box and arrow the number at the lid on behalf of the day to mark the date of braille on the box... So the next time when take something out of box, the blinds knew last store date...
Zhejiang University of Technology
Le Xu Cunyuan Yang Guanglei Huang