China Railway Tunnel Group Merkez Ofis AdresNo. 2 (Self-Made), West Side of Gongye 4th Road, Mingzhu Bay Qibu Area, Nansha District, Guangzhou, Guangdong, ÇinE-postainfo@crtg.cnWeb Sitesihttps://www.crtg.cn/ Yol Tarifi Al Adreslerimiz Pekin Uluslararası Ofisi AdresAVIC Tower, East Third Ring Road B10, Chaoyang District, Beijing, Çin, PekinE-postainfo@crtg.cnWeb Sitesihttps://www.crtg.cn/ Yol Tarifi Al