Low temperature and high efficiency: when the ambient pressure is below 7.37 KP, the boiling point of water is â?¤ 40 â??. Combined with the characteristic that microwave (electromagnetic wave) can heat the material without medium, the water in the material evaporates rapidly. The drying efficiency is more than five times higher than that of the conventional heat conduction type. Especially for products with large volume and poor heat conduction.