Vacuum freeze dryers are widely used in various food, fruit, herbal medicine, pet food, biopharmaceutical and other industries. The biggest advantage is that it can keep the nutrients in the material to the greatest extent, and the freeze dried food is very convenient to eat. For example, the dried fruit we make ourselves can be eaten directly, or it can be eaten with oatmeal, etc. After encountering water, it can quickly return to the original state.