Petroliam Nasional Berhard (Petronas) and Saud Arabian Oil Company (Aramco) are reportedly among potential suitors for a controlling stake in Daewoo Engineering & Construction Co., Ltd. (KOSE:A047040), in a deal that could fetch as much as KRW 2 trillion. The 50.75 percent Daewoo E&C stake is being put up for sale by state-owned Korea Development Bank (KDB), which in July said BoA Merrill Lynch and Mirae Asset Daewoo Securities have been appointed as its advisers on the deal.