Introducing the D Series Air Cooler, an exceptional indoor cooling solution meticulously designed to integrate seamlessly with condensing units across various types of cold rooms. Tailored to cater to a spectrum of temperature requirements, this series is divided into three distinguished subcategories: DL, DD, and DJ. 1. The DL Air Cooler: Engineered for environments around 0ºC, it is predominantly utilized in fresh-keeping cold storage facilities where maintaining the freshness of goods is paramount. 2. The DD Air Cooler: Perfect for conditions hovering around -18ºC, this model is ideal for general cold storage purposes, ensuring your products remain in optimal condition. 3. The DJ Air Cooler: Designed for extreme environments with temperatures plummeting to -25ºC to -30ºC, this variant is specially crafted for blast freezer rooms, providing unparalleled cooling efficiency for your most demanding preservation needs. Choose the D Series Air Cooler by Harbin Dongan Building Sheets Co., Ltd., and experience advanced cooling technology that ensures precision, reliability, and ultimate satisfaction.