The shelf life of snacks and foods that have been irradiated with microwaves can be extended. In particular, the cut surface will be contaminated after the slice is sliced. If it is irradiated on the outside of the package, it has the effect of preventing mildew. Even after the snacks are packed in plastic bags and then concentrated into a carton , they are irradiated with microwaves through the conveyor belt, which also has a good effect. In addition, in addition to adapting to microwave irradiation, the packaging materials for snacks should be appropriately changed. If the mold-proof and sterilizing device can handle small batches, it can be used in a general microwave oven (of course, the size is slightly larger). However, for large quantities and large capacity, it is recommended to use a special microwave oven as shown in the figure to ensure uniform heating temperature.