对二甲苯：供需压力增加，趋势偏弱，PTA，加工费低位，关注计划外减产，MEG，多MEG空PTA/PX

Report Industry Investment Rating - No specific industry investment rating is provided in the report. Core Viewpoints of the Report - PX has a weak unilateral trend, with the main contract shifting positions and a reverse spread in the monthly spread. The short - term PXN has support, and it is necessary to pay attention to the repair of terminal orders starting from late August [8]. - PTA has a weak unilateral trend. Hold the mid - term strategy of going long on MEG and short on PTA. Under low processing fees, pay attention to unplanned production cuts and conduct a positive spread in the 9 - 1 monthly spread. PTA has reduced supply and increased demand, but the high inventory of grey fabrics makes it difficult to form an effective positive feedback [8]. - MEG has a weakly oscillating unilateral trend. Hold the mid - term strategy of going long on MEG and short on PTA. Maintain the 9 - 1 positive spread operation in the range of - 50 to 0 and pay attention to the 1 - 5 reverse spread [9]. Summary by Related Catalogs Market Dynamics - PX: On the 13th, the PX price fell. An Asian spot in September was traded at $831. The PX price lost support due to the decline in crude oil futures. The supply recovery and weak downstream demand depressed the market sentiment, but some participants thought the market was relatively tight [5]. - PTA: The spot price dropped to 4,695 yuan/ton, with a mainstream basis of 09 - 13 [6]. - MEG: A 400,000 - ton/year synthetic gas - based ethylene glycol plant in Shaanxi reduced its load to replace the catalyst, and a 800,000 - ton/year plant in Zhejiang restarted [6]. - Polyester: On the 13th, the sales of direct - spun polyester staple fiber were average, with an average sales - to - production ratio of 48%. The sales of polyester yarn in Jiangsu and Zhejiang were weak, with an average sales - to - production ratio of just over 40% [7]. Trend Intensity - The trend intensity of PX, PTA, and MEG is - 1, indicating a weak trend [8]. Viewpoints and Suggestions - PX: Weak unilateral trend, main contract position shift, monthly spread reverse spread. PXN has short - term support, and pay attention to terminal orders from late August [8]. - PTA: Weak unilateral trend, hold the mid - term strategy of long MEG and short PTA. Pay attention to unplanned production cuts and 9 - 1 monthly spread positive spread. PTA has reduced supply and increased demand, but the high grey fabric inventory affects the positive feedback [8]. - MEG: Weakly oscillating unilateral trend, hold the mid - term strategy of long MEG and short PTA. Maintain the 9 - 1 positive spread operation in the - 50 to 0 range and pay attention to the 1 - 5 reverse spread. This week, the supply and demand of ethylene glycol both increased, but the terminal demand is weak [9].