1, ceramic tableware can be put in the freezer. Now advanced ceramics have overcome the low temperature environment.

2. The ceramic lunch box will not be damaged by freezing in the quick freezing room. At least once or twice, it will not be frozen, but porcelain will be frozen quickly, and its internal structure will change under the action of thermal expansion and cold contraction, which will affect its strength and service life. But freezing once will not be damaged by freezing. Unless containers of other shapes are frozen and cracked by frozen liquid.