Can a stainless steel lunch box be microwaved?

　　Stainless steel lunch boxes cannot be microwaved. Here is the specific analysis:

　　When the metal part of the stainless steel lunch box is heated in the microwave oven, electric sparks may be generated. This is because the electromagnetic waves generated by the microwave oven will react with the metal, resulting in the generation of sparks. This will not only cause damage to the microwave oven, but may also damage the magnetron of the microwave oven in severe cases.

　　Heating effect: Stainless steel will also reflect microwaves, making it impossible to heat food effectively.

　　In order to heat the food efficiently, it is recommended to transfer the food to microwave-safe glass or ceramic containers. These containers do not react with the microwave oven and therefore heat the food steadily. Also, glass and ceramic containers are easier to clean and do not absorb food flavors.

　　Overall, although stainless steel lunchboxes offer the advantages of durability, ease of cleaning and environmental friendliness in daily life, microwaving should be avoided when heating food.