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China Railway High-speed (CRH) is a high-speed rail service operated by China Railway.


The introduction of CRH series was a major part of the sixth national railway speedup, implemented on April 18, 2007. In 2017, China Railway High-speed provides service to 29 of the country's 33 provincial-level administrative divisions and operates over 25,000 km (16,000 mi)'s passenger tracks in length, accounting for about two-thirds of the world's high-speed rail tracks in commercial service. It is the world's most extensively used railway service, with 1.713 billion trips delivered in 2017 bringing the total cumulative number of trips to 7 billion.