Introducing the exceptional D Series Air Coolers, a premier line of indoor cooling solutions meticulously crafted to perfectly pair with condensing units for various cold room environments. Designed with versatility in mind, our air coolers are segmented into three outstanding sub-series, each tailored to meet specific temperature requirements: 1. DL Sub-Series: Engineered for environments maintaining temperatures around 0ºC, this sub-series is the quintessential choice for fresh-keeping in cold storage facilities, ensuring your perishables are preserved in optimal conditions. 2. DD Sub-Series: Expertly built to function at approximately -18ºC, this series is your reliable partner in maintaining a consistent cold storage environment, safeguarding your product's integrity. 3. DJ Sub-Series: Designed for the most demanding conditions, this sub-series excels at temperatures ranging from -25ºC to -30ºC, making it the perfect ally for blast freezer rooms, where rapid and efficient freezing is paramount. Experience unmatched performance and durability with Harbin Dongan Building Sheets Co., Ltd.'s innovative Cold Room Air Coolers.