Nac Co., Ltd. engages in the renting and sale of dust control and cleaning products, and equipment in Japan. It operates through Kurikura Business, Rental Business, Architectural Consulting Business, Residential Business, and Beauty and Health Business segments. The Kurikura Business segment manufactures and sells home delivery water; and hypochlorous acid aqueous solution. The Rental Business segment rents and sells dust control products, such as mops and mats, nursing care and welfare equipment, pest exterminators, and pest control equipment; and undertakes regular cleaning work and building maintenance. The Architectural Consulting Business segment constructs and sells construction-related know-how products and building materials to local builders, consulting business, and housing franchise business; and installs and sells energy-saving related materials. The Residential Business segment constructs custom built detached houses; sells condominiums; and offers financial services. The Beauty and Health Business segment manufactures and sell cosmetics, health foods, beauty materials, and pharmaceuticals. The company was formerly known as Duskin Tsurugawa Co., Ltd. and changed its name to Nac Co., Ltd. in 1977. The company was incorporated in 1971 and is headquartered in Tokyo, Japan.