The dehumidifying dryer has features of high effective dehumidifying,long using time,low dew point. Micro-thermal freezer dehumidifying dryer,dried through cooling compressed ari,then dehuidified by moiecule screen to ensure heated air with low dew point enter into drying tower,and dry the raw materials,no need of air circumfluence and recycle,with excellent dehumidifying effect. Characters:(1): ...