MARC has affirmed its rating of A- on Perdana Petroleum Berhad's (Perdana Petroleum, formerly known as Petra Perdana Berhad) Dual Currency Revolving Programme with a negative outlook. The rating action affects outstanding secured serial bonds of RM105 million issued under Tranche 1 of the programme.The bonds are the company's remaining obligations under the programme with the November 2011 repayme...