Many products are labelled with the 'use by' or 'best before' dates, which only gives information about the shelf life of unopened products. Sometimes, there is a limited shelf life after breaking the package, which is easy to forget and hard to keep track. The light, simple and cost-efficient OPENING DATE REMINDER can be attached to the ends of traditional labels. The user only has to tear off the 'month' and the 'range of dates' that correspond to the day of opening to keep track of any product's shelf life.
Deng Qingxin, Huang Hao, Kang Jinming, Su Xuyun, China