Saudi Aramco's CEO Amin H. Nasser (2nd L) shakes hands with Petronas chief Wan Zulkiflee Wan Ariffin (2nd R) during a signing ceremony in Kuala Lumpur, Malaysia, on Feb. 28, 2017. Saudi Aramco and Petronas, the two national oil companies from Saudi Arabia and Malaysia respectively, entered into a 50-50 partnership on Tuesday. Saudi Aramco will invest 7 billion U.S. dollars in a refinery in the southern Malaysian state of Johor, called Refinery and Petrochemical Integrated Development, or RAPID. (Xinhua)