Doowon Heavy Industrial Co., Ltd. is a South Korean specialist in automotive air-conditioning compressors and cooling systems. Originating in 1979, the company expanded from manufacturing military diesel engines to designing its proprietary DV series compressors in 2008, supporting the global aftermarket. Based in Sacheon, Gyeongsangnam‑do, Doowon HI produces compressor units and bus-cooler systems alongside military products, establishing a firm foothold in heating, ventilation, and air-conditioning components. With in‑house R&D and precision production, its niche centers on robust, reliable compressor solutions for heavy-duty vehicles and defense applications worldwide