PD Series Refrigeration Air Dryers，the complete product line features high-efficiency plate-fin heat exchangers and R407C refrigerant, delivering compact, energy-saving and eco-friendly performance. Risheng offers six standard-color PD series models, with custom color options available to fulfill individual customer requirements.

The HT Series refrigeration air dryer is engineered to handle inlet temperatures up to 80° C using eco-friendly HFC refrigerants R134a and R407C, featuring an energy-efficient design with oversized pre-cooler and counter-flow technology that deliver up to 25% energy savings, while its high-efficiency demister-type moisture separator has 99+% water removal efficieney to enable dew point performance - significantly superior to cyclone separators - with reliable operation guaranteed by heavy-duty hermetic refrigeration compressors for maintenance-free service, precise temperature control through an automated refrigeration system, and flexible power supply options for diverse installation requirements.