对二甲苯：短期有反弹，中期仍偏弱，PTA：短期有反弹，中期仍偏弱，MEG：1-5月差反套

Report Summary 1. Report Industry Investment Ratings No specific industry investment ratings are provided in the report. 2. Core Views of the Report - PX, PTA, and MEG are expected to have short - term rebounds but remain weak in the medium term. For MEG, a 1 - 5 month spread reverse arbitrage is recommended [2][11][12]. - Policy support for consumption is emphasized, and the implementation needs to be monitored. Terminal will have a final round of restocking at the end of September, after which the medium - term unilateral trend may remain weak [11][12]. 3. Summary by Related Catalogs Market Dynamics - PX: Due to stronger upstream prices, Asian paraxylene increased by $1.50/ton to $835.67/ton CFR Unv1/China and $814.67/ton FOB Korea, while downstream fundamentals are still weak. PX - naphtha spread closed at $226.80/ton on September 17, lower than the previous day. Some refineries in Northeast Asia may reduce aromatic hydrocarbon production. New Fengming Group will postpone the commissioning of its 3 million - ton/year No. 4 PTA production line until PTA margins improve [6][7]. - PTA: The current domestic PTA profit margin in China is negative, hovering around 120 - 130 yuan/ton, far below the break - even level. Hengli Petrochemical plans to shut down a 2.2 million - ton/year PTA unit in Dalian on October 11. Dushan Energy's 2.5 million - ton PTA unit plans to be overhauled in November, and the start - up plan of a new 3 million - ton PTA unit in East China is temporarily cancelled [6][7][8]. - MEG: On September 17, the daily average price of MEG spot was 4373 yuan/ton, and the daily average price of futures for late October was 4365 yuan/ton. The average price of spot in Ningbo market was 4398 yuan/ton, and the average price of non - coal - based spot in South China market was 4410 yuan/ton [9]. - Polyester: On September 17, the sales of polyester yarn in Jiangsu and Zhejiang were generally weak, with an average sales rate of about 4 - 5%. The sales of direct - spun polyester staple fibers were average, with an average sales rate of 54% [9][10]. Trend Intensity - The trend intensities of PX, PTA, and MEG are all 0, indicating a neutral trend [11]. Views and Suggestions - PX: In the short term, it will rebound following oil prices. Hold the 11 - 01 long - short spread and the 1 - 5 reverse spread. Take profit on PXN compression positions below $220. Track the impact of Zhejiang Petrochemical's device maintenance and Sheng Hong's reformer shutdown on the PX segment. Pay attention to the possible restart of the 4.5 million - ton PTA device of Fuhai Chuang, the October maintenance of Hengli Dalian, and the November maintenance of New Fengming [11]. - PTA: In the short term, it will rebound following oil prices. Hold the 11 - 01 long - short spread and the 1 - 5 reverse spread. Short the 01/05 contract PTA processing fee on rallies. Future attention should be paid to the possible restart of the 4.5 million - ton PTA device of Fuhai Chuang, the October maintenance of Hengli Dalian, and the November maintenance of New Fengming. The polyester load peak has passed, and demand is expected to weaken in the fourth quarter [11][12]. - MEG: The market is concerned about the impact of anti - involution policies, and coal prices have rebounded, leading to a short - term recovery in ethylene glycol valuation. Implement a 1 - 5 reverse spread. The supply pressure is gradually emerging, and the 01 contract will face a loose supply situation. The polyester start - up rate reached 91.6% (+0.3%), but the start - up peak has passed, and demand is expected to weaken in the fourth quarter [12].