Step 1: Freeze drying<br>Quickly reduce the temperature of fruits and vegetables through a freeze-drying machine, solidify the water in the fruits and vegetables, and retain the benefits of the fruits and vegetables.<br>Step 2: Primary drying<br>Reduce the surrounding air pressure to slightly raise the temperature, and extract water from the frozen fruits and vegetables.<br>Step 3: Secondary drying<br>Raise the temperature to room temperature to remove all remaining moisture, and store freeze-dried vegetables and fruits at room temperature.
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