聚酯成本端支撑较强，长丝龙头宣布进一步减产

Group 1 - The price spread for domestic key refining projects this week is 2439 CNY/ton, a decrease of 102 CNY/ton (down 4%) compared to the previous week [1] - The price spread for foreign key refining projects this week is 1102 CNY/ton, a decrease of 58 CNY/ton (down 5%) compared to the previous week [1] - The average price of PX this week is 893.7 USD/ton, an increase of 3.0 USD/ton compared to the previous week, with a price spread against crude oil of 422.9 USD/ton, a decrease of 18.1 USD/ton [2] Group 2 - The average prices for POY, FDY, and DTY in the polyester sector this week are 6657 CNY/ton, 6879 CNY/ton, and 7779 CNY/ton, with increases of 107 CNY/ton, 129 CNY/ton, and 29 CNY/ton respectively compared to the previous week [1] - The weekly average profits for POY, FDY, and DTY are -61 CNY/ton, -179 CNY/ton, and -179 CNY/ton, with increases of 79 CNY/ton, 93 CNY/ton, and 27 CNY/ton respectively compared to the previous week [1] - The inventory levels for POY, FDY, and DTY are 12.8 days, 17.4 days, and 23.2 days, with changes of +1.1 days, -2.1 days, and -1.4 days respectively compared to the previous week [1] Group 3 - The operating rate for long filaments is 90.3%, an increase of 0.1 percentage points compared to the previous week [1] - Domestic refined oil prices for gasoline, diesel, and aviation kerosene have decreased this week [2] - In the US, gasoline, diesel, and aviation kerosene prices have increased this week [2] Group 4 - Relevant listed companies in the private refining and polyester filament sector include Hengli Petrochemical (600346), Rongsheng Petrochemical (002493), Hengyi Petrochemical (000703), Tongkun Co., Ltd. (601233), and Xin Fengming (603225) [2]