Introducing the exceptional D series of air coolers from Harbin Dongan Building Sheets Co., Ltd., your ultimate solution for indoor cooling excellence! Specifically engineered to seamlessly integrate with various condensing units, these cutting-edge air coolers are designed to meet the diverse demands of all types of cold rooms. Our sophisticated range includes three distinct sub-series tailored to accommodate specific temperature needs: 1. DL Air Cooler: Perfect for maintaining a refreshing atmosphere around 0ºC, this model is an ideal choice for fresh-keeping cold storage, ensuring your products stay crisp and fresh. 2. DD Air Cooler: Optimized for environments around -18ºC, this robust unit is perfect for standard cold storage, offering reliable performance and efficiency for all your preservation needs. 3. DJ Air Cooler: A high-performance solution for temperatures plunging below -25ºC to -30ºC, this powerful cooler is specially crafted for blast freezer rooms, delivering superior cooling for extreme freezing requirements. Experience unparalleled energy performance and fast cooling capabilities with our D series air coolers – the pinnacle of precision engineering to meet all your cooling demands.