China Railway Seventh Group Co., Ltd(CRSG), registered in Zhengzhou, Henan Province, is a large state-owned enterprise, which directly sets up for more competitive market structure of China Railway Engineering Corporation(CREC).CRSG possesses Super-class Qualification of Railway General Contract; Class-A Qualification of General Contract for highway, building and municipal works; Class-A ProfessionalQualification of highway subgrade, bridge, hydraulic tunnel, track-laying and girder-erecting works, tunnel,electrification works, and urban railtransit .

　　Bridge Works

　　Tnnel Works

　　Municipal Works

　　Rail Works

　　Highway Works

　　Building Works

　　Water Conservancy and Hydropower Works

　　Railway Works

　　Telecommunication,Signaling,Electric

　　Power,Electrification and Other Works