...April 14, 2020 - Thai Oil will remain a highly strategic subsidiary of PTT, given high operational integration. - Unfavorable industry conditions will hinder Thai Oil's earnings over 2020-2021 while high spending on the Clean Fuel Project will keep the company's debt-to-EBITDA ratio at about 8x in the period. We lowered Thai Oil's stand-alone credit profile to '##-' from '##'. - On April 14, 2020, S&P Global Ratings revised its outlook on Thai Oil to negative from stable. We affirmed the '###+' long-term issuer credit rating on the Thailand-based refinery. We also affirmed our '###+' issue rating on senior unsecured notes Thai Oil issued or guaranteed. - The negative outlook mirrors that of the local currency rating on PTT and reflects mounting pressure on PTT's creditworthiness, given unsupportive industry conditions. SINGAPORE (S&P Global Ratings) April 14, 2020--S&P Global Ratings today took the rating actions listed above. We affirmed our '###+' issuer credit rating on Thai Oil Public...