029-62891501 Yanchang Group Headquater
029-62891502 Oilfield Company         
029-628915l03 Refinery and Chemical Company
029-62891504  Exploration Company
029-62891505  Pipeline and Transportation Company
029-62891506  Marketing Company
029-62891507  Finance Center
029-62891508  Shaanxi Xinghua Group Company
029-62891509  Chemical Engineering, and Construction Company
029-62891510  Material Company
029-62891511  Industry and Trade Company
029-62891512  Jingbian Energy and Chemical Engineering Development Zone
029-62891513  Headquarter of Xinghua Comprehensive Development Project
029-62891514  Headquarter of Ziwu Tyre Project
029-62891520  Research and Development Institute
029-62891516  Yanan Base
029-62891517  Preparation and Construction Office of Yanchang Petroleum Hotel at Yulin
029-62891518  Yulin Sand Control Base
029-62891519  Yanchang Petroleum Newspaper Office