SNCF BB 13000 SNCF BB 13000 The BB 13000 class were electric locomotives operated by SNCF in France. They were one of four classes, together with the BB 12000, CC 14000 and CC 14100 classes, that formed an experimental group for studying the practicality of the new French electrification. The standard French electrification system before WWII was 1,500 V DC, beginning with locomotives such as the 2BB2 400. Post-WWII, France occupied the south-west of Germany and the . This line had been electrified with one of the first systems to use 50 Hz, the standard commercial distribution frequency, rather than the lower Hz
China Railway No.2 Group the State Council. In January 2017, China Railway Group Limited backdoor listing some assets, as well as privatized China Railway Erju's subsidiary China Railway Erju Engineering Co., Ltd. (). China Railway Erju was renamed to China Railway Hi-tech Industry (CRHIC) after the transactions. The predecessor of the company was found in 1998 (China Railway No.2 Group Co., Ltd., ), which could be traced back to 1978, as the Second Bureau of Engineering of the Ministry of Railways. () The original second bureau could traced back the history to 1950, but in 1978 the bureau was split into the [new] second