Nihon Parkerizing. 

Established in 1928 and headquartered in Tokyo, Japan, Nihon Parkerizing Co., Ltd. is a global provider and producer of advanced surface treatment solutions. The company formulates and supplies chemicals used for substrate cleaning, enhancing corrosion protection, preparing surfaces for painting, and providing lubrication. In addition to chemical products, their portfolio includes emulsion-type rolling oils for steel processing and cooling applications, heat exchangers, and comprehensive technical support services. Nihon Parkerizing also offers a wide spectrum of specialized surface treatments, such as metal rust prevention, multi-functional surface modifications, and various heat treatments. A notable proprietary offering is WEATHERCOAT, a surface treatment technology designed to promote the formation of a stable rust layer on weathering steel. Their service capabilities further extend to conversion coating, deformation lubricants, solid and rust-proof coatings, salt-bath nitriding and carburizing, austemper treatment, composite plating, and plasma electrolytic oxidation.