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zipper milk / milk package

zipper milk

When the milk left, we fold milk carton and store in the refrigerator.
It is detriment for freshness of the milk to be exposed to the air.
In order to prevent this, people made a milk carton with zipper to maintain freshness of the milk

University

Kyung -sung university

Kyung -sung university
Busan, South Korea

yoonhye kim,
Kyung -sung university

Jeong yeon joo,
Kyung -sung university

Park eun young,
Kyung -sung university

Lee jeong ju,
Kyung -sung university