MARC has affirmed its ratings of AAAID(S) on the respective Al-Bai’ Bithaman Ajil Islamic Debt Securities (BaIDS) issuances of PETRONAS Chemicals Glycols Sdn Bhd (Glycols) (formerly known as Optimal Glycols (Malaysia) Sdn Bhd) and PETRONAS Chemicals Derivatives Sdn Bhd (Derivatives) (formerly known as Optimal Chemicals (Malaysia) Sdn Bhd) with a stable outlook. The rating actions affect RM15...