1. Report's Investment Rating for the Industry The provided content does not mention the investment rating for the polyester industry. 2. Core Views of the Report - In 2025, the polyester industry chain was affected by factors such as macro - sentiment fluctuations, tariff conflicts, cost oscillations, device changes, and weak demand, leading to intensified price fluctuations and a further downward shift in the price center, hitting a historical low since 2007 [2][21]. - In 2026, the cost is expected to maintain relatively weak wide - range fluctuations. The oversupply of crude oil will put further downward pressure on oil prices, with Brent crude oil mainly fluctuating in the range of $50 - 75 per barrel [3]. 3. Summary by Relevant Catalogs 3.1 2025 Polyester Industry Chain Market Review - The price of the polyester industry chain fluctuated significantly in 2025, showing different trends in each quarter due to various factors such as cost, tariffs, and device maintenance. For example, in the first quarter, it showed a trend of rising first and then falling; in the second quarter, it was affected by tariffs and device maintenance, showing a deep V - shaped trend [21][22][23]. 3.2 Crude Oil: Supply Surplus and Price Pressure - In 2025, crude oil prices continued to decline under the pressure of continuous production increase, but were also affected by US tariff policies and geopolitical conflicts, resulting in sharp price fluctuations. Brent crude oil fell below $59 per barrel, and WTI crude oil fell below $56 per barrel, both hitting new lows since February 2021 [29]. - In 2026, crude oil demand is expected to grow slowly, and supply growth will slow down, but there will still be an oversupply situation, and oil prices will continue to be under pressure. It is expected that Brent crude oil will mainly fluctuate in the range of $50 - 75 per barrel [34]. 3.3 PX: Capacity Increase and Supply - Demand Expected to Be Tight First and Then Loose - **Market Review**: In 2025, PX prices were affected by multiple factors and fluctuated widely, with the price center shifting downwards. In the first half of the year, prices declined, and in the second half, they showed a relatively strong performance, and the PX - Nap spread strengthened [45]. - **Cost Analysis**: The cost of PX is expected to be relatively weak. Naphtha supply and demand are expected to be relatively loose, and the cracking spread is expected to decline to the range of $50 - 100 per ton. The supply - demand of MX is also expected to be loose, and the PX - MX spread will remain at a relatively strong level above $80 per ton [58][66]. - **Supply - Demand Situation**: PX capacity expansion is coming to an end. In 2026, the supply - demand structure is expected to be tight first and then loose. The supply - demand will be relatively tight in the first half of the year, especially in the second quarter during the maintenance season, and the PX - Nap spread is expected to widen [79][114]. - **Price Forecast and Operation Suggestions**: PX prices are expected to be relatively strong, especially in the second quarter, but the absolute price will still be restricted by cost. The main price fluctuation range is 5400 - 7700 yuan per ton. It is recommended to buy on dips and seize short - selling opportunities. For arbitrage, it is recommended to go long on the basis, with a target of 300 - 600 yuan per ton, and go long on the PX05 - 09 spread, with a target of 100 - 200 yuan per ton [116]. 3.4 PTA: Stable Supply and Increasing Demand, Supply - Demand Structure to Improve - **Market Review**: In 2025, PTA prices fluctuated widely, with the price center shifting downwards. The market was affected by factors such as trade conflicts, cost fluctuations, and anti - involution [127]. - **Supply - Demand Analysis**: In 2026, there is no new PTA capacity plan, but downstream polyester capacity will continue to expand, which will improve the PTA supply - demand structure. The processing fee is expected to rise to the range of 300 - 500 yuan per ton, and the operating rate is expected to increase to the range of 80% - 90% [137][144]. - **Price Forecast and Operation Suggestions**: PTA prices will still follow cost fluctuations. The main price fluctuation range is 3800 - 5600 yuan per ton. It is recommended to buy high and sell low according to cost trends and seasonal laws. For arbitrage, it is recommended to go long on the basis and seize opportunities to go long on the PTA05 - 09 spread [186]. 3.5 Ethylene Glycol: Capacity Continues to Increase, Price Still Under Pressure - **Market Review**: In 2025, ethylene glycol prices continued to decline, hitting a new low in nearly five years. In the first half of the year, it showed a good supply - demand structure, but in the second half, the price was under pressure due to factors such as increased supply and weak cost [195]. - **Supply - Demand Situation**: In 2026, ethylene glycol supply and demand will both increase, but the supply will be relatively loose. The price is expected to fluctuate in the range of 3000 - 4500 yuan per ton. It is recommended to short on rallies and seize short - term long - buying opportunities [256]. - **Arbitrage Suggestions**: It is recommended to short the basis on rallies and seize opportunities to go long on the ethylene glycol 05 - 09 spread [248]. 3.6 Polyester Staple Fiber: Capacity Expansion, Supply - Demand Weakening - **Market Review**: In 2025, polyester staple fiber prices were affected by factors such as weak terminal demand and cost decline, with the absolute price declining, but the processing fee remained stable around the break - even point [266]. - **Supply - Demand Analysis**: In 2026, the supply and demand of polyester staple fiber will both increase, but the supply increase will be greater than the demand increase, which will put pressure on the processing fee. The main price fluctuation range is expected to be 5800 - 6800 yuan per ton [331]. - **Operation and Arbitrage Suggestions**: It is recommended to mainly short according to the cost, and try to go long from August to September according to the seasonal law. For arbitrage, pay attention to fundamental changes and seize opportunities to go long on the basis and the PF05 - 09 spread [331]. 3.7 Polyester Bottle Chips: Continued Capacity Expansion, Profit Still Under Pressure - **Market Review**: In 2025, polyester bottle chip prices were affected by factors such as capacity expansion and cost fluctuations, with the price center shifting downwards, and the processing fee was at a low level [338]. - **Supply - Demand Situation**: In 2026, the supply of polyester bottle chips is expected to increase, and the demand will increase steadily. The supply - demand will maintain a dynamic wide - balance, which will still strongly suppress the processing fee. The price is expected to be strong first and then weak, with the main fluctuation range of 5200 - 6400 yuan per ton [382]. - **Operation and Arbitrage Suggestions**: It is recommended to short on rallies and seize short - term long - buying opportunities according to seasonal laws, cost trends, and device maintenance dynamics. For arbitrage, it is recommended to short the basis on rallies and pay attention to opportunities to short the PR03/05 spread [382]. 3.8 Polyester Industry Chain - Related Stocks As of December 12, different stocks in the polyester industry chain showed different trends. For example, the stock price of PetroChina increased by 8.67%, while the stock price of Sinopec decreased by 11.89% [383].

Report Industry Investment Rating - Short - term PX/PTA/PF/PR are rated as neutral [4] Report's Core View - PTA follows cost to move in a volatile manner. The PTA futures closed down on Thursday, the spot market negotiation atmosphere was average, and the spot basis rebounded. The weekly polyester load was stable with a slight decline [1]. - In terms of cost, the market is concerned about OPEC+ production increase and geopolitical changes, and oil prices are moving in a volatile manner. The gasoline cracking spread has a seasonal rebound, but the upside is limited due to new energy substitution. The aromatics blending demand for gasoline is not promising, and the intermittent blending demand can be basically met by naphtha. The export of aromatics blending materials from South Korea to the US has declined. The short - process PX plants are restarting due to profit recovery [2]. - For PX, the PXN was 262 US dollars/ton (no change compared to the previous period). The PX load at home and abroad has increased recently, and the PXN has declined with the supply recovery. The spot market is still short of goods, and the continuation of the tight PX supply - demand situation needs further attention [2]. - For TA, the spot basis of the main contract is 216 yuan/ton (a 19 - yuan increase compared to the previous period), the PTA spot processing fee is 397 yuan/ton (a 9 - yuan increase compared to the previous period), and the main - contract disk processing fee is 359 yuan/ton (a 9 - yuan decrease compared to the previous period). PTA is expected to destock in June, but the strong polyester production - cut sentiment affects the demand expectation [3]. - In terms of demand, the polyester operating rate is 91.7% (a 2.2% decrease compared to the previous period). Since mid - May, due to the rapid rise of raw material prices and the weakening of orders in the weaving sector, the polyester production - cut feedback has emerged, and the demand expectation is weak in the off - season [3]. - For PF, the spot production profit is - 2 yuan/ton (an 8 - yuan decrease compared to the previous period). The demand has declined since mid - May, and some factories have the intention to cut production [3]. - For PR, the bottle - chip spot processing fee is 243 yuan/ton (a 52 - yuan decrease compared to the previous period). The polyester load is at a high level, the overseas market trading is average, the inventory pressure of bottle - chip factories has increased, and the market price is expected to face pressure [3] Summary According to Relevant Catalogs Price and Basis - The report shows the TA main contract, basis, and inter - period spread trends; PX main contract, basis, and inter - period spread trends; PTA East China spot basis; and short - fiber 1.56D*38mm semi - bright natural - white basis [8][9][11] Upstream Profits and Spreads - It presents the PX processing fee PXN, PTA spot processing fee, South Korean xylene isomerization profit, and South Korean STDP selective disproportionation profit [16][19] International Spreads and Import - Export Profits - The report includes the toluene US - Asia spread, toluene South Korea FOB - Japan naphtha CFR, and PTA export profit [24][26] Upstream PX and PTA Start - up - It shows the PTA load in China, South Korea, and Taiwan, as well as the PX load in China and Asia [27][30][32] Social Inventory and Warehouse Receipts - It presents the PTA weekly social inventory, PX monthly social inventory, PTA total warehouse receipts + forecast volume, PTA warehouse warehouse - receipt inventory, PX warehouse - receipt inventory, and PF warehouse - receipt inventory [35][38][39] Downstream Polyester Load - The report includes the filament sales volume, short - fiber sales volume, polyester load, direct - spinning filament load, polyester staple - fiber load, polyester bottle - chip load, filament DTY factory inventory days, filament FDY factory inventory days, filament POY factory inventory days, Jiangsu and Zhejiang loom operating rate, Jiangsu and Zhejiang texturing machine operating rate, Jiangsu and Zhejiang printing and dyeing operating rate, filament FDY profit, and filament POY profit [46][48][58] PF Detailed Data - It shows the polyester staple - fiber load, polyester staple - fiber factory equity inventory days, 1.4D physical inventory, 1.4D equity inventory, recycled cotton - type staple - fiber load, original - recycled spread, pure - polyester yarn operating rate, pure - polyester yarn production profit, polyester - cotton yarn operating rate, and polyester - cotton yarn processing fee [69][78][80] PR Fundamental Detailed Data - The report includes the polyester bottle - chip load, bottle - chip factory bottle - chip inventory days, bottle - chip spot processing fee, bottle - chip export processing fee, bottle - chip export profit, East China water bottle - chip - recycled 3A - grade white bottle - chip spread, bottle - chip next - month spread, and bottle - chip next - next - month spread [84][89][92]