U-shaped electric heating tube installed in centre of the coils, effectively defrost

Application
D serial air cooler can match with different capacity condensing equipments; it can apply to different temperature cold rooms. Dl serial can apply to 0°Ccold room, storage such as egg or vegetable. DD apply to -18°C cold room, storage meat, fish. DJ apply to -25°Ccold room for freezing or fast freezing the fresh meat and fish.