1, tin foil can't be put in the microwave oven. Tin foil belongs to metal and has low resistance, so it can't be put in the microwave oven. If the tin foil is placed in the microwave oven, it will lead to uneven heating and low efficiency, or sparks will appear in the microwave oven, which will cause danger and damage the magnetron in more serious cases.

2. There are many things used in food processing like tin foil, such as egg tarts, roast chicken wings, barbecues and so on. These things may all be tin foil. Generally speaking, it is not recommended that you wrap these foods in tin foil and heat them in the microwave oven. If you need to heat food with tin foil, it is recommended to put it in the oven.

3. Tin foil is a metal substance, and all metal substances can't be put into the microwave oven. Tin foil belongs to metal and has low resistance. Microwave ovens have a reflective effect on metals. When the metal is heated in the microwave oven, the metal parts in the microwave oven will be damaged and sparks will appear, which will cause the microwave oven to catch fire.