对二甲苯：供需紧平衡，正套，PTA：月差正套，多PTA空MEG，MEG：多 PTA 空 MEG

1. Report Industry Investment Ratings - p - Xylene: Long the spread between November and January contracts, short the spread between January and May contracts. Long PX and short EB. Go long on dips before mid - September [7] - PTA: Long the spread between November and January contracts, long PTA and short MEG [1] - MEG: Long PTA and short MEG. Do not chase long positions, consider the valuation high above 4550 [1][9] 2. Core Views - The supply - demand of p - Xylene is in a tight - balance pattern. The overnight oil price rebound supports PX. In September, supply will marginally increase, but PX demand from new PTA projects keeps the balance tight [7][8] - PTA's unilateral price is oscillating strongly with limited downside. Polyester开工率 is rising. After some PTA device incidents, it turns to a de - stocking pattern. PTA basis and spread are supported, but factory hedging may suppress the price [8] - MEG is in a unilateral oscillating market. Supply and demand both increase, and ports turn to a stocking pattern. The overall unilateral price support is limited. High coal - based profits impact the valuation of oil - based sources [9] 3. Summary by Relevant Catalogs Market Data - Futures Prices: PX, PTA, MEG, PF, and SC futures prices had different changes. For example, PX主力期货昨日收盘价 was 6866, down 0.17%; PTA主力 was 4772, down 0.25% [2] - Futures Spreads: PX11 - 1 spread yesterday closed at 72, up 4; PTA11 - 1 was - 10, down 2; MEG1 - 5 was - 39, down 1 [2] - Spot Prices: PX CFR China was 848 dollars/ton yesterday, down 0.67 dollars; PTA in East China was 4727 yuan/ton, down 13 yuan; MEG spot was 4507 yuan/ton, down 27 yuan [2] - Spot Processing Margins: PX - naphtha spread was 251.29 dollars/ton yesterday, down 3.5 dollars; PTA processing margin was 188.78 yuan/ton, down 32.89 yuan [2] Market Dynamics - PX: An East China factory postponed the restart of its PX and PTA devices. On September 1, Asian p - Xylene prices were basically stable, but concerns about upstream demand pressured the market. The Asian contract price negotiation for September p - Xylene cargoes failed to end by the end of August [2][3][4] - PTA: A 70 - ton PTA device in Taiwan, China restarted at the end of August; a 55 - ton and a 150 - ton device are restarting, and a 120 - ton device is expected to stop on September 4 [5] - MEG: The inventory at East China main ports was about 44.9 tons, down 5.1 tons. Different ports had different inventory changes [5] - Polyester: A 50 - ton polyester bottle - chip device in South China restarted, and a 35 - ton device in Northeast China stopped. Some polyester devices in other regions restarted or are expected to restart. The sales of polyester yarn and staple fiber were weak today [5][6] Trend Intensity - p - Xylene trend intensity: 1 - PTA trend intensity: 1 - MEG trend intensity: 0 [6]