The vacuum freeze dryers & lyophilizer produced by LABOAO are widely used in the fields of medicine, biology, chemical industry, food and other industries. The advantage of vacuum freeze-dried items is to preserve the original color, fragrance and taste of the material to a greater extent, and to preserve the activity of the product to a greater extent. Heat-sensitive and easily oxidized materials retain heat-sensitive components and do not change after drying. The dehydration is thorough, the dry product is light in weight and the shape remains unchanged.