vacuum freeze dryer 1,reasonable structure 2,steady performance 3,Bitzer compressor 4,R717/R22/R404A ApplicationVacuum freeze drying machine is suitable for fruit, vegetable, aquatic, meat, instant foodstuff,condiments, medicine,beverage, speciman and so on except grease.Working principleAfter some pretreatments, foodstuff in a low temperature and vacuum surroundings, the inner moisture of the ...