Investment Rating - The report maintains a positive outlook on the petrochemical industry, particularly regarding the PTA sector, due to increased maintenance schedules and anticipated production cuts [3][4]. Core Insights - The PTA industry has been in a prolonged state of loss since 2022, exacerbated by rapid capacity expansion. As of November 7, 2025, the PTA industry's gross profit reached -319 CNY/ton, indicating a loss across the sector [3][4]. - Recent increases in PTA maintenance schedules are expected to tighten supply, with major companies like Tongkun and Hengli yet to announce maintenance plans. If these companies proceed with production cuts, industry profitability may return to breakeven levels, with potential profit per ton increasing by 200-300 CNY [3][8]. - The upstream sector is experiencing a decline in oil prices, with Brent crude closing at 63.63 USD/barrel, down 2.21% from the previous week. This decline is coupled with an increase in drilling day rates for self-elevating platforms, indicating a recovery trend in the oil service sector [15][33]. Summary by Sections PTA Sector - The PTA industry is facing a significant downturn, with losses expected to continue into 2025. The increase in maintenance schedules is anticipated to reduce supply and support a recovery in profitability [3][4][8]. - Current PTA operating rates are at 78%, reflecting weak industry conditions, but with no significant inventory pressure, a quicker recovery is expected as maintenance plans are realized [8][10]. Upstream Sector - Brent crude oil prices have decreased, with a closing price of 63.63 USD/barrel, while WTI prices also fell to 59.75 USD/barrel. The overall trend suggests a potential for further price declines, although OPEC's production cuts may provide some support [15][17]. - The number of active drilling rigs in the U.S. has increased slightly, indicating a potential uptick in exploration and production activities despite a year-over-year decline [25][30]. Refining Sector - The refining sector is seeing improved margins, with the Singapore refining margin rising to 23.18 USD/barrel. This improvement is attributed to a recovery in demand and a tightening of supply due to maintenance activities [46][48]. - The domestic refining sector's product price differentials have also improved, suggesting a favorable environment for refining profitability moving forward [46][48]. Polyester Sector - The polyester chain is showing signs of recovery, with expectations for improved profitability as supply and demand dynamics shift. Key companies to watch include Tongkun and Wankai New Materials [10][11].