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We usually drink juice after open the lid will have a shelf life at room temperature, the shelf life
Is 2 ~ 3 days. So in the meantime it is hard to determine this bottle of juice still can continue to
drink use, in this case I used nitric oxide and oxygen contact principle designed the chameleon
can see at a glance whether can understand drink drink bottle cap, save a lot of trouble for you.
Zhengzhou University of Light Industry