The Vacuum Freeze Drying Machine is a dehydrating machine that dries products under vacuum conditions. It is an advanced drying equipment and is currently recognized as one of the best ways to dry products. The principle of freeze drying is to freeze the material and then reduce the surrounding pressure so that the frozen water in the material sublimates directly from the solid phase to the gas phase. Therefore, compared with other dehydration methods, freeze drying causes less damage to the material. This method can achieve rapid drying and maximize the preservation of the shape and nutritional content of the material.