Submaterials. See if there is a sign suitable for microwave oven on the packaging of fresh-keeping bag. If yes, it can withstand the high temperature of 100- 120 degrees. Pay attention to the material of the product label when buying. Different materials have different uses: polyethylene bags (PE) are widely used in food packaging, while polypropylene bags (PP) have high transparency and are mainly used for packaging bread and snacks. PVC bags (PVC bags) are used to package vegetables and fruits, but they cannot be used for microwave heating.

Submaterials. See if there is a sign suitable for microwave oven on the packaging of plastic wrap. If yes, it can withstand the high temperature of 100- 120 degrees.

Pay attention to the material of the product label. Different materials have different uses: polyethylene bags (PE) are widely used in food packaging, while polypropylene bags (PP) have high transparency and are mainly used for packaging bread and snacks.

If you want to heat food in a microwave oven, you must have a special fresh-keeping bag for microwave oven to use. Polyvinyl chloride bags (PVC bags) can also be used to package perishable foods such as vegetables and fruits, but they cannot be used to package oily foods or to heat them in microwave ovens.

If you want to refrigerate or freeze food, you must use fresh-keeping bags, not ordinary plastic bags. Ordinary plastic bags are simple in workmanship and can't keep fresh. The fresh-keeping bag has good air permeability and can keep food fresh for a long time.