Which companies do China North and South Cars refer to respectively?

China South Locomotive Group and China CNR Group, two state-owned enterprises, have merged.

China CSR Group Co., Ltd. is mainly engaged in the design and manufacture of railway rolling stock, urban rail transit vehicles and related products, and has an important position and influence in the rail transit equipment industry in China. There are 27 subsidiaries of China South Locomotive Group Co., Ltd., which are distributed in 10 provinces and cities. The main core assets have been injected into China South Locomotive Co., Ltd. ..

CNR Corporation, referred to as CNR for short, is a joint-stock company established by China North Locomotive and Rolling Stock Industry Group Corporation, Datong Qianjin Investment Co., Ltd., China Chengtong Holding Group Co., Ltd. and China Huarong Asset Management Co., Ltd. with the approval of the State-owned Assets Supervision and Administration Commission on June 26th, 2008. It is mainly engaged in R&D, design, manufacture, maintenance and service of railway rolling stock, urban rail vehicles and construction machinery and electronics.