KUALA LUMPUR: Petroliam Nasional Bhd (PETRONAS) and Saudi Arabian Oil Company (Aramco) today announced the signing of an agreement for the transfer of the latter’s equity stakes, held via Aramco Overseas Company B.V., in Pengerang Refining Company Sdn Bhd and Pengerang Petrochemical Company Sdn Bhd (collectively, PRefChem), located within the Pengerang Integrated Complex, Pengerang, Johor to PETRONAS.