CRTG to construct Prince Edward station and tunnels on CCL 6, Singapore MRT October 9, 2017 | Asia Pacific Company News The China Railway Tunnel Group (CRTG), a subsidiary of China Railway Corporation, has secured the SGD310.8-million contract from the Land Transport Authority (LTA) to construct the Prince Edward stati... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password