ELECTRICAL HEATING SYSTEM OF ZDG40 VACUUM FREEZE DRYING MACHINE
 
                 
                
                    
                                        
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Graphical Abstract
 
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Abstract
    An electrical heating system of ZDG40 wacuum freeze drying machine was introduced,which has solved the problem of vacuum discharge in drying cabinet during freeze drying processing,and has a wide adjustment range of heating power and a large power capacity,and can accomplish optimizing control of power supply in freeze drying processing.
 
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