Generally speaking, the pharmaceutical process requires controlling the relative humidity between 20% and 35%. The humidity requirements for the capsule drying workshop are generally a temperature of 23 ºC± 2 ºC and a relative humidity of 20%. From the above data, it can be seen that the relative humidity requirement during the pharmaceutical process is generally below 45%, which belongs to the low humidity requirement. The biggest feature of the Shangdao rotary dehumidifier is that it can provide customers with a continuous and stable temperature and humidity environment, especially under low humidity requirements, with efficient and stable dehumidification effect.