Freeze-dried specimens are an early method of making specimens. Hunters in the Northeast have long known how to preserve skins by this method. The basic principle is that the water inside the specimens is extracted by cryopreservation, thus making proteins Loss of activity, to a certain extent, to a long time does not rot.
The freeze-dried specimens of modern specimen production technology require quick freezing and dehumidification equipment. The effect of using ordinary refrigerators is not ideal. The freeze-drying method is a new technology for specimen preparation. The specimens produced are very effective and can be produced. The posture is constantly adjusted during the process.
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