... 3.high quality,ISO 4.competitive price Adsorption Air DryerFeaturesThis kind of dryer is energy efficient, designed and developed by ... principleThe dehumidification principle of this kind of dryer is quite same to the heatless regenerative dryer, while the difference is that this ... , and then into the regenerative tower to dehumidify the desiccant, so the heating device is added to the structure, ...