...April 14, 2020 - Unfavorable industry conditions will continue to hamper the earnings of Thailand-based PTT Global Chemical Public Co. Ltd. (GC) over the next two to three years. - However, the impact of lower earnings on the petrochemical producer's leverage will be moderate given the absence of sizable capital spending post 2020. - On April 14, 2020, S&P Global Ratings revised its outlook on GC to negative from stable. We also affirmed our '###+' long-term issuer credit rating on the company and our '###+' issue ratings on the US$1 billion senior unsecured notes issued by GC and GC Treasury Center Co. Ltd., a financial subsidiary. - The negative outlook mirrors that on the local currency rating on PTT and reflects mounting pressure on the parent's creditworthiness. SINGAPORE (S&P Global Ratings) April 14, 2020--S&P Global Ratings today took the rating actions listed above. We revised the outlook on GC to reflect mounting pressure on the company's parent PTT Public Co. Ltd. (PTT; foreign...