ZCH low dew point rotor dehumidification unit uses silica gel and molecular sieve rotor to dehumidify under the low temperature and low humidity conditions. The chemical characteristics are particularly significant. The rotor is scientifically matched with the direct evaporation refrigeration system. It has a special dehumidification process and piping design. , Control the temperature of the inlet air in each section to reach the air outlet parameters of the ultra-low dew point at room temperature.