Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
It is very unobvious to see the expiration date on the pack of the toast. Consumers usually ignore the expiration date because it is just a small number that printed on the pack. Consumers should be more careful of the expiration date in order to prevent the toast from becoming moldy.
Users stick a transparent sticker on the pack of the toast, the special chemical material, acid alkali will combine with oxygen. Days by days, the color will change in order to remind users that the toast is going to out of expiration date.