PTA：估值偏低，成本支撑下反弹对待，MEG：供需边际承压，关注短期反弹高度

Report Industry Investment Rating No information provided regarding the report industry investment rating. 2. Core Views of the Report - PTA: With cost support and peak - season restocking, PTA inventory reduction continues. It is expected to have a short - term strong - side oscillation at a low valuation. However, the long - term supply - demand situation is weakening, and the rebound momentum is limited. Attention should be paid to crude oil dynamics [6]. - MEG: The cost side of ethylene glycol performs well. With some device maintenance and blocked arrival of imported goods, it is expected to continue the short - term rebound trend [6]. 3. Summary According to the Directory 3.1 Upstream Industry Chain Analysis - Price and Market Trend: Due to the US increasing sanctions on Russia, the ongoing stalemate in the Russia - Ukraine conflict, and the easing of market concerns about trade disputes, combined with the decline in US commercial crude oil inventories, international crude oil rebounded from a low level. For PX, with cost support, many factories reported reduced reform loads or malfunctions, and terminal restocking enthusiasm increased, leading to a recovery in the absolute price of PX. As of October 24, the closing price of Asian PX was $815/ton CFR China, up $32/ton from October 17 [16]. - Capacity Utilization: The 1 million - ton device of Urumqi Petrochemical continued maintenance and was planned to restart around October 29; two 1.4 - million - ton devices of Fushun Dahua continued maintenance and were planned to restart in early November. The weekly average capacity utilization rate of PX was 86.33%, a decrease of 1.09% compared to the previous week [19]. - Price Difference: As of October 24, the PX - naphtha price difference was $233.9/ton, a decrease of $12.3/ton from October 17. Although many factories reported reduced reform loads or malfunctions, the cost side was significantly driven up by crude oil, resulting in a narrow decline in the PX - naphtha price difference [22]. 3.2 PTA Fundamental Analysis - Market Trend: In the first half of the week, affected by the weakening of oil prices, the overall sentiment in the commodity market was low, and the pessimistic sentiment in the industrial chain spread. The spot price of PTA continued to weaken. In the middle of the week, as oil prices rebounded from a low level, the overall sentiment in the commodity market improved, and the purchasing enthusiasm of downstream industries in the traditional peak season increased. The spot price rebounded from a low level. As of October 24, the spot price of PTA was 4,450 yuan/ton, and the spot basis was 2601 - 81 [25]. - Capacity Utilization: The weekly average capacity utilization rate of PTA reached 75.98%, a month - on - month increase of 0.42%. Although the load of Yisheng Ningbo's device decreased, due to the load increase of Yisheng New Materials last week, the increase was more than the decrease, and the overall domestic production this period increased. In October, Ineos and Hengli both had maintenance plans, and the restart times of Yisheng Dalian and Yisheng Hainan were not yet determined. The monthly production of PTA may increase significantly. Attention should be paid to whether there will be more - than - expected production cuts in existing devices [28]. - Processing Fee: The terminal performance was mediocre, the purchasing enthusiasm of downstream industries was hindered, and the spot price trend was sluggish. However, the raw material supply was tight, and the price trend was strong. This week, the PTA processing fee continued to decline. Next week, there is an expectation of a rebound in the PTA spot price, but the maintenance devices have restart plans, and the polyester end changes little. The inventory reduction amplitude in the balance sheet narrows, and the PTA processing fee may be slightly repaired [31]. - Supply - Demand Situation: In October, there was insufficient PTA device maintenance, and the maintenance devices restarted one after another. With little change in demand, the PTA supply - demand situation is expected to be in a loose balance [32]. 3.3 MEG Fundamental Analysis - Market Trend: At the beginning of the week, the market continued to worry about the supply - demand pattern. In the middle of the week, affected by factors such as the continuous rise of crude oil, the reduction in supply, and the decrease in imported goods, the price of ethylene glycol rose from a low level. As of October 24, the closing price of ethylene glycol in Zhangjiagang reached 4,183 yuan/ton, and the delivered price in the South China market remained stable at 4,280 yuan/ton [37]. - Capacity Utilization: This week, the total domestic ethylene glycol capacity utilization rate was 68.26%, a month - on - month decrease of 0.79%. Among them, the capacity utilization rate of integrated devices was 67.12%, a month - on - month decrease of 1.81%; the capacity utilization rate of coal - based ethylene glycol was 70.18%, a month - on - month increase of 0.94%. In October, due to cautious import expectations, the inventory accumulation amplitude at ports was limited, but the domestic production increase expectation was obvious. Attention should be paid to the impact of unexpected device changes [38]. - Inventory: As of October 29, 2025, the total expected arrival volume of domestic ethylene glycol in East China was 127,000 tons. As of October 23, the total inventory of MEG in the main ports of East China was 483,000 tons, a decrease of 10,000 tons compared to October 16 [42][44]. - Profit: With the stable operation of newly invested domestic devices, the overall supply continued to increase. The terminal orders were mediocre, and the downstream polyester demand was lackluster. The trend of weakening supply - demand could not be reversed. The raw material prices fluctuated, and the sample profits of each ethylene glycol production process showed both increases and decreases. As of October 24, the profit of naphtha - based ethylene glycol was - $95.04/ton, up $13.85/ton from last week; the profit of coal - based ethylene glycol was - 610.44 yuan/ton, down 140.24 yuan/ton from last week [46]. 3.4 Downstream Demand - Side Analysis - Polyester Capacity Utilization: The weekly average capacity utilization rate of polyester was 87.53%, a month - on - month decrease of 0.25%. Some domestic polyester devices were shut down for maintenance during the week. Next week, the previously shut - down and maintained devices have no clear restart expectations, and the commissioning of new devices is postponed. It is expected that the domestic polyester production will decline slightly next week [51]. - Capacity Utilization of Each Product: This week, the weekly average capacity utilization rate of polyester filament was 91.04%, a decrease of 0.02% from the previous period. The weekly average capacity utilization rate of polyester staple fiber was 85.14%, a month - on - month decrease of 2.02%; among them, the average capacity utilization rate of conventional staple fiber was 88.77%, a month - on - month decrease of 2.67%. The Fujian Shanli plant shut down during the period. The capacity utilization rate of fiber - grade polyester chips was 85.04%, a month - on - month decrease of 0.08% [57]. - Inventory: Downstream industries carried out centralized restocking during the week, the overall sales of polyester increased, and the finished product inventory of factories decreased [58]. - Cash Flow: The polymerization cost increased, and polyester filament manufacturers sold products at discounted prices. The cash flow of most varieties was compressed [63]. - Weaving Load: As of October 23, the comprehensive operating rate of chemical fiber weaving in the Jiangsu and Zhejiang regions was 66.45%, an increase of 2.39% compared to the previous data. The average number of terminal weaving order days was 15.68 days, an increase of 0.88 days compared to last week. As the weather gets colder, the demand for domestic autumn and winter fabrics is good, and the inventory pressure of grey fabrics is relieved. However, the market lacks confidence in future orders, and raw materials are purchased on a rigid basis. It is expected that the operating rate will still face downward pressure in the future [64]. 3.5 Summary of Polyester Industry Chain Fundamentals - Cost: International crude oil rebounded from a low level, and the absolute price of PX recovered [68]. - Supply: The weekly average capacity utilization rate of PTA increased slightly, and the total domestic ethylene glycol capacity utilization rate decreased [68]. - Demand: The weekly average capacity utilization rate of polyester decreased slightly, and the weaving operating rate in the Jiangsu and Zhejiang regions increased [68]. - Inventory: The supply of PTA is expected to increase, and the near - term supply remains tight, while the long - term supply - demand inventory accumulation expectation is strong. The inventory of MEG in the main ports of East China decreased [68].