Microwave Herb Drying Sterilization Equipment relies on microwave heating. Microwave heating mechanism is completely different from the traditional heating method (conduction, convection, radiation). When the microwave is irradiated to the aqueous material, since the water molecule is a polar molecule, the arrangement of the polar molecules changes from a disorderly nonpolar state to an ordered arrangement. When the direction of the external electric field is changed repeatedly, the polar molecules correspondingly exchange and reciprocate accordingly, and swing frequently. During the wobbling process, a large amount of heat is generated due to similar friction between the molecules and the temperature of the material also increases.