... / cold room High efficiency and energy saving fan air cycle system Bitzer air compressor cooler for blast freezer/ cold roomAbout usChangzhou New Star Refrigeration ... temperature,the DL group,for 0°C,DD for -180°C and DJ,for that below-25°C.All the air-cooler/evaporator is ... anti-rusty,corrosion proof,and high reliability.Long air duct ...