... the parts contacting the products are made of ALSL 316L stainless steel, thesurface roughness reaches R a<0.5um. 2) ... plasma, bacteria, enzyme, antibiotics, hormone, etc2. Food industryVacuum freeze dryer could be used in the drying vegetables, meet, fish, condiment ... -costly transported.3. Nutrition and health care industryVacuum freeze dryer nurture products such as Royal jelly, ginseng, terrapin, ...