SNCF Class BB 10003 locomotive was used as a test machine for operations of the TGV-TMST on 750 V and 3000 V. In 1998 the locomotive was converted back to a non-experimental class - as SNCF BB 15007. (SNCF Class BB 15000) The results were not as good as synchronous motor technology; it was not until the introduction of GTO transistor technology that series production of an asynchronous induction motored locomotive began in France, as the "Eurostar" TGV (1992), and later the BB 36000 "Astride" (1996). SNCF Class BB 10003 The locomotive SNCF BB 10003 was an experimental prototype locomotive converted from a SNCF
China Railway Guangzhou Group Company Law of China. China Railway is a state-owned enterprise (replacing the Ministry of Railways) that the Ministry of Finance acted as the shareholder. The Chinese character means iron, but means railway, thus the company did not have any relation with Guangzhou Iron and Steel (). China Railway Guangzhou Group China Railway Guangzhou Group, officially abbreviated as CR Guangzhou or CR-Guangzhou, formerly, Guangzhou Railway (Group) Corporation from 1993 to 2017 and Guangzhou Railway Administration from 1953 to 1993, is a subsidiaries company under the jurisdiction of the China Railway (formerly the Ministry of Railway). It supervises the railway network within