NFK Holdings Co., Ltd. designs, manufactures, and sells industrial furnaces in Japan. Its combustion and heating systems serve petroleum refineries, petrochemical plants, and other industrial facilities such as cement kilns. The product lineup includes incinerators for waste liquids and halide wastes, melting furnaces for sewage sludge, acid gas and tail gas incinerators, deodorization and inert gas generating plants, and reaction furnaces. The company also makes regenerative-burner furnaces, boiler burners and economizers, gas turbine exhaust regenerators, and provides energy-saving equipment and boiler maintenance services. Incorporated in 1950, it is headquartered in Tokyo, Japan.