Oil & Gas OTL To Analyse Market Trends Affecting Downstream Petroleum In Africa.By orientalnewsngJuly 13, 20150 Yemisi Izuora The 9th edition of the Oil Trading and Logistics Expo (OTL Africa Downstream 2015) is expected to analyse… Share this:Share Click to email a link to a friend (Opens in new window) Email Tweet Click to share on Reddit (Opens in new window) Reddit