...Our ratings on PTT Global Chemical Public Co. Ltd. (GC) benefit from its strategic importance and strong operational link to parent PTT Public Co. Ltd. We believe GC will retain a high level of product and marketing integration within the PTT group. GC sources a large portion of its feedstock and sells much of its products through the group. In addition, we believe GC will remain the largest petrochemical producer in Thailand and will hold a material portion of PTT's refining capacity. These factors, in addition to GC's closely linked reputation with PTT, should provide the parent with a strong incentive to divert further financial support to the subsidiary. Consequently, we include a three-notch uplift from GC's stand-alone credit profile (SACP) of '##-', given our assessment of GC's group status as strategically important....