Sinopec Sales Company signed a cooperation agreement with Yanchang Petroleum (Group) Co. Ltd. on April 1. Under the agreement, Sinopec and Yanchang Petroleum will strengthen their cooperation in the purchase and sales of oil products as well as transport and storage.
Source:
http://www.sinopecgroup.com/group/en/Sinopecnews/20160412/news_20160412_339960856633.shtml