Mitsui DM Sugar Co.,Ltd. manufactures and sells refined sugar and functional food materials in Japan. It operates through the Sugar Business, Life Energy Business, and Real Estate Business segments. The Sugar Business manufactures and sells raw sugar, processed sugar, and sugar-related products; rock sugar, liquid sugar, brown crystal sugar, sugar stick sachets, powdered sugar, gum syrup, and soft drink concentrates; centrifugal sugar and black sugar; sweeteners and other food ingredients; and functional food. This segment also engages in the manufacture, sale, and cargo handling of product packaging materials. Its Life Energy segment provides food colorings, flavorings, sugar cane extract, agar, bio-based products, nutritional care supplements, and nutritional products for patients with dysphagia. As well as home delivery lunch box services. The Real Estate Business segment is involved in the leasing of land, retail premises, and offices, as well as warehouse operations. The company was formerly known as Mitsui DM Sugar Holdings Co., Ltd. and changed its name to Mitsui DM Sugar Co.,Ltd. in April 2025. Mitsui DM Sugar Co.,Ltd. was incorporated in 1947 and is headquartered in Tokyo, Japan.