NFK Holdings Co., Ltd. operates as a holding company which engages in the manufacture and sale of industrial furnace combustion equipment. It operates through the Industrial Furnace, Burners & Combustion Related Equipment and Others. The Industrial Furnaces, Burners and Combustion Related Equipment segment provides normalizing, hardening, tempering, annealing, box, bell type, retractable type, rotary type, and pit type furnaces. It also sells NDF-DEKA air pre-heaters, flame detectors, and intensified combustors. The Others segment engages in the business of real estate lease. The company was founded on April 12, 1950 and is headquartered in Yokohama, Japan.