Nihon Parkerizing. 

Nihon Parkerizing Co., Ltd. manufactures and supplies surface treatment chemicals in Japan and internationally. The company supplies surface treatment chemicals for cleaning substrates, adding corrosion resistance, creating a base for painting, and providing lubrications; emulsion type rolling oil for rolling steel and cooling applications; heat exchangers, as well as offers technical support services. Further, the company provides various surface treatments, such as rust preventive treatment of metals and multi-functional surface treatments; and heat treatments. It offers WEATHERCOAT, a surface treatment technology to develop rust layer on weathering steel. The company also provides conversion coating, lubricant for deformation, solid lubricant and rust proof coatings, salt-bath nitriding and carburizing, austemper treatment, composite plating, and plasma electrolytic oxidation services. The company was incorporated in 1928 and is headquartered in Tokyo, Japan.