Introducing the D series of air coolers, a remarkable line of indoor cooling equipment meticulously designed to complement condensing units in all varieties of cold rooms. This versatile series is tailored to meet specific temperature requirements, featuring three distinct sub-series: DL, DD, and DJ. 1. DL Air Cooler: Ideally suited for environments around 0ºC, the DL air cooler is predominantly utilized in fresh-keeping cold storage, ensuring your products remain pristine. 2. DD Air Cooler: Perfectly crafted for conditions around -18ºC, the DD air cooler excels in general cold storage, maintaining the optimal chill for your goods. 3. DJ Air Cooler: For those demanding temperatures between -25ºC and -30ºC, the DJ air cooler is engineered specifically for blast freezer rooms, delivering unparalleled freezing capabilities. With the D series, Harbin Dongan Building Sheets Co., Ltd. offers a comprehensive solution that aligns seamlessly with your cold storage needs, all while maintaining competitive pricing that enhances your efficiency and sustainability.