China Railway Science & Industry Group (CRSIC) is subordinate to China Railway Group Limited (Fortune Global 500). It is a construction machinery standardization technology ascription institution of the Ministry of Railways and a technology research center of the construcion Equipment of China Railway.

It is comprised of two branches as China Railway Engineering Machinery Research and Design Institute and China Railway Science & Industry Machiney Set Subsidiary Company, as well as five subsidiary companies as China Railway Jiujiang Bridge Engineering Co., Ltd., China Railway Heavy Engineering Co., Ltd., etc.

Its business is related with the engineering machinery design and production such as railways, highways, tunnels, etc. and various fields such as the bridge steel structure manufacturing and installation, the engineering construction, the technical detection and service, etc.