Midea microwave oven and Galanz microwave oven are better. When microwave is radiated to food, food always contains a certain amount of water, and water is composed of polar molecules (even if there is no external electric field, the positive and negative charge centers of molecules do not coincide). The orientation of this polar molecule will change with the microwave field. Due to the movement of polar water molecules in food. As well as the interaction between adjacent molecules, it produces a phenomenon similar to friction, which makes the water temperature rise, so the temperature of food also rises. The food heated by microwave is heated at the same time, so that the whole object is heated evenly and the heating speed is fast. It heats food 5 cm deep at a frequency of 2.45 billion times per second, accelerating the operation of molecules.