Main uses: This dryer is suitable to the vacuum drying for powder of granule materials of the lines of medicine,foodstuff,and chemical ect,specially for the drying of folloeing materials including thermal sensitive,easy oxidation,and the one that its crystal cannot be destructed,as well as the one which the solvent inside should be recollected or anystimulated or moxious materials. Specialty When the dryer vessel rotated,the heat-receiving surface of target materials sre to be replaced every moment to quick the drying speed so that the products include are dried evenly.Meanwhile,it is heated indirectly to avoid it being coninated.Others include no dead angle inside,easy operating and cleasing,the optimized sealing with better seal effect,as well as very conevnient maintenance etc.