What is the temperature resistance of aluminum foil lunch boxes?

Aluminum foil lunch boxes are quite common now. I saw in an article that Yahong aluminum foil explained the temperature resistance of its products. At the high temperature of-20 to 250 degrees, the molecular structure is stable, which means that 250 degrees is no problem. As for the melting point of aluminum is 660 degrees, it is uncertain whether the temperature can reach such a high level.