Mei Mei Chu (Recasts with outlook, adds details and quotes) KUALA LUMPUR, Feb 26 (Reuters) - Malaysia’s Petronas on Friday delayed the launch of its Pengerang Integrated Complex until the second half of the year from the first, but dismissed rumours partner Saudi Aramco was looking to exit the $27 billion project. The state oil firm Petronas said it faced another challenging year after booking a 1.1 billion ringgit ($272 million) loss for the final quarter of 2020, its third quarterly loss in a row though higher prices and demand for liquefied natural gas (LNG) helped. The world’s fourth-biggest LNG exporter had earned a profit of 4.1 billion for the October-December quarter a year earlier.