Why does the crisper have vents?
It should be closed when storing, otherwise the air will enter, and it will not be able to preserve the freshness at all. When storing food, fasten the lid tightly. Close the cover on the small hole (this small cover can only let out air but not air in), repeatedly press and release the box cover several times, the air in the box will be discharged from the small hole, the box cover will sink, and the inside will be in a semi-vacuum state. The purpose of improving the preservation effect.
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