How to package cooked food sent abroad?

When sending cooked food to other places, you can choose vacuum packaging, and all the air in the packaging container is pumped out and sealed, so that the bag can be kept in a high and reduced pressure state. Lack of air is equivalent to anoxic effect, which makes microorganisms have no living conditions, thus achieving the goal of cooked food being disease-free and rot-free. In addition, the vacuum bag should be kept in a dry environment before vacuum packaging.