The regional distribution and recovery of the mineral oil resources discovered up to the present has led the principal importers - not least in order to reduce their transport costs - to subdivide the mineral oil markets on a regional basis.
Usasazo lwengingqi nokuphumelela kwakhona ubutyebi bezimbiwa ze-oyile kufunyenwe kubo ukuza kutsho ngoku intloko kubangenisi ukwenzela ukuncphisa indleko zothutho ukwahlula-hlula imariki zesimbiwa se-oyile kwisiseko sengingqi