China Railway Construction Engineering Co., Ltd. is one of the main contractors for railway construction in China and the largest railway construction company in the world. The company has 65,438+03 branches, namely China Railway Construction Engineering No.1 Bureau, China Railway Construction Engineering No.2 Bureau, China Railway Construction Engineering No.3 Bureau, China Railway Construction Engineering No.4 Bureau, China Railway Construction Engineering No.5 Bureau, China Railway Construction Engineering No.6 Bureau, China Railway Construction Engineering No.7 Bureau, China Railway Construction Engineering No.8 Bureau, China Railway Construction Engineering No.9 Bureau, China Railway Construction Engineering No.10 Bureau, China Railway Construction Engineering No.12 Bureau and China Railway Construction Engineering No.13 Bureau.