1. Report Industry Investment Rating - No relevant content provided 2. Core Views of the Report - For PTA, the supply has recently returned, and with some major suppliers selling goods, the spot market liquidity is fair. The market supply - demand outlook is weak, and the spot basis is gradually declining. PTA spot prices mainly fluctuate following the cost side. Attention should be paid to polyester upstream - downstream device changes and terminal demand [5]. - For MEG, the port inventory increased slightly this week, but it's unlikely to be persistent this month. Due to pre - holiday stocking, polyester factories still have demand for low - price restocking. In the short term, MEG supply - demand remains tight, and the basis has some support during the delivery period. However, with the progress of new device commissioning, the supply - demand will turn loose in the far - month, and the futures price is under pressure. Attention should be paid to device changes [7]. 3. Summary According to Related Catalogs 3.1.前日回顾 - No relevant content provided 3.2.每日提示 - **PTA Daily View** - **Fundamentals**: PTA futures fluctuated briefly following the cost side yesterday and finally closed slightly lower. The spot market negotiation atmosphere was average, and the spot basis changed little. September goods were traded at a discount of 75 - 80 to the 01 contract, with the price negotiation range around 4585 - 4670. October goods were traded at a discount of 55 - 60 to the 01 contract. Today's mainstream spot basis is 01 - 77 [5]. - **Basis**: The spot price is 4626, and the 01 contract basis is - 40, with the futures price higher than the spot price [5]. - **Inventory**: PTA factory inventory is 3.8 days, a decrease of 0.04 days compared to the previous period [5]. - **Futures Chart**: The 20 - day moving average is downward, and the closing price is below the 20 - day moving average [5]. - **Main Position**: The net short position increased [5]. - **Expectation**: As mentioned above, pay attention to polyester device changes and terminal demand [5]. - **MEG Daily View** - **Fundamentals**: On Thursday, the ethylene glycol price fluctuated weakly. In the morning, the MEG futures fluctuated narrowly, with traders mainly conducting swap transactions. Near noon, the futures price declined weakly, and the spot basis strengthened moderately. In the afternoon, affected by a cracking anomaly in a South China device, the market sentiment was boosted. In the US dollar market, the center of the ethylene glycol outer - market price adjusted widely. In the morning, recent shipments were negotiated around 516 - 519 US dollars/ton, and in the afternoon, the negotiation center回调 to 514 - 515 US dollars/ton. The difference between the inner and outer markets was large, and the buying follow - up was weak [7]. - **Basis**: The spot price is 4362, and the 01 contract basis is 94, with the spot price higher than the futures price [8]. - **Inventory**: The total inventory in the East China region is 38.17 tons, an increase of 0.93 tons compared to the previous period [8]. - **Futures Chart**: The 20 - day moving average is downward, and the closing price is below the 20 - day moving average [8]. - **Main Position**: The net short position decreased [7]. - **Expectation**: As mentioned above, pay attention to port shipment conditions and device changes [7]. 3.3.今日关注 - **Influencing Factors Summary** - **Positive Factors**: The average operating load of polyester devices has further increased to 91.3%, a 1 - percentage - point increase from the previous week. With the approaching of the traditional "Golden September and Silver October" peak season, the market's expectation of demand start is slightly reflected. Yisheng Hainan's 2 million - ton device is under maintenance and is expected to restart in November [11]. - **Negative Factors**: The profit margins of each link in the industrial chain continue to be under pressure, and the overall operating atmosphere remains cautious [10]. - **Current Main Logic and Risk Points** - Short - term commodity markets are greatly affected by the macro - level. Attention should be paid to the cost side, and for the futures price rebound, attention should be paid to the upper resistance level [10]. 3.4.基本面数据 - **PTA Supply - Demand Balance Sheet**: It shows the PTA supply - demand situation from January 2024 to December 2025, including capacity, output, import, export, consumption, inventory, etc. For example, in September 2025, the PTA capacity is 9172, the output is 626, the total supply is 626, the total demand is 624, and the inventory at the end of the period is 337 [12]. - **Ethylene Glycol Supply - Demand Balance Sheet**: It shows the ethylene glycol supply - demand situation from January 2024 to December 2025, including production, import, supply, consumption, port inventory, etc. For example, in September 2025, the EG output is 58, the total supply is 234, the total demand is 233, and the supply - demand difference is 2 [13]. - **Price Data**: It includes the prices of various products such as naphtha, PX, PTA, MEG, polyester filaments, and their changes from September 17 to September 18, 2025. For example, the spot price of naphtha (CFR Japan) increased from 575.5 to 584.5 US dollars/ton, and the CCFEI price index of PTA (domestic) decreased from 4630 to 4590 yuan/ton [14]. - **Inventory Data**: It shows the inventory situation of PTA, MEG, PET chips, polyester filaments, etc. from 2021 to 2025, including factory - inventory available days and port inventory [43][45]. - **Operating Rate Data**: It shows the operating rate situation of PTA, PX, ethylene glycol, polyester factories, and downstream weaving machines from 2020 to 2025 [54][56][58][60]. - **Profit Data**: It shows the profit situation of PTA, MEG, polyester fibers, etc. from 2022 to 2025, including processing fees and production gross margins [62][64][66][68][69].