We’re happy to announce that the photocatalytic deodorization and sterilization system jointly developed by U-vix Corporation which belong to Sunstar Group (hereinafter Sunstar) and West Japan Railway Technos Cooperation (hereinafter JR West Technos) is adopted as an air purifier for passenger compartments of limited express trains of West Japan Railway Company (hereinafter JR West). Sunstar’s photocatalytic deodorization and sterilization system oxidizes and decomposes harmful organic compounds such as odor-causing substances, bacteria and viruses floating in the indoor air into water and carbon dioxide by a photocatalytic reaction with using our unique “TMiP®”（Titanium Mesh impregnated Photocatalyst）and ultraviolet light. It has a high deodorizing effect and bacteria/virus removing effect. It does not release any substances for air purification into the passenger compartment, does not require replacement of dust collection filters. Thanks to such great functions with little maintenance, it is widely used in various indoor spaces such as schools, nurseries, homes, offices, hotels, commercial facilities, medical care facilities as a deodorizing and sterilizing system. Our product jointly developed with JR West Technos was already adopted as an air purifier for railway vehicles on the Osaka Loop Line in 2016. As a result of being evaluated for maintaining good air quality in the passenger compartment based on the driving experience so far, it will be gradually adopted in the limited express trains of JR West after this autumn. From now on, we shall develop air purifiers for railway vehicles under the name “TiO Clean®”.