KTK Group. 

KTK Group Co., Ltd. is a specialized manufacturer and supplier of crucial components for the railway industry. They provide interior systems, electrical control units, and various vehicle equipment, catering to a diverse range of rail transport, including high-speed trains, metro systems, light rail vehicles (LRVs), and standard passenger coaches, serving both the Chinese domestic and international markets. Their extensive product line encompasses a wide array of categories, such as aesthetic elements, general equipment, lighting solutions, underframe boxes, sophisticated door systems, seating, kitchen facilities, windshields, and electrical products. Additionally, they offer advanced passenger information systems and Platform Screen Door (PSD) solutions. KTK Group has cultivated strategic partnerships with key global players in the rail sector, including CRCC, Bombardier, Alstom, and Siemens. The company was founded in 2003 and maintains its headquarters in Changzhou, China.