1. Report Industry Investment Rating - No relevant information provided 2. Core View of the Report - The PTA market saw price increases due to a rebound in the crude oil market and production cuts at some PTA plants, but the spot basis weakened due to continuous shipments from major suppliers. The ethylene glycol market maintained a strong - side oscillation, with spot prices rising slightly and the basis negotiation strengthening. The polyester market faced a complex situation, with factors such as changes in raw material prices, production and sales rates, and inventory levels affecting the market [2]. 3. Summary by Related Catalogs Market Data - **Crude Oil**: INE crude oil price dropped from 508.8 yuan/barrel on August 5, 2025, to 505.9 yuan/barrel on August 6, 2025, a decrease of 2.90 yuan/barrel [2]. - **PTA**: PTA - SC spread increased from 984.5 yuan/ton to 1047.6 yuan/ton, PTA/SC ratio rose from 1.2663 to 1.2849. PTA主力期价 increased from 4682 yuan/ton to 4724 yuan/ton, and the spot price rose from 4660 yuan/ton to 4680 yuan/ton. The spot processing fee increased from 144.6 yuan/ton to 160.0 yuan/ton, and the disk processing fee rose from 161.6 yuan/ton to 174.0 yuan/ton [2]. - **PX**: CFR China PX price increased from 839 to 844, and the PX - naphtha spread increased from 254 to 260 [2]. - **MEG**: MEG主力期价 increased from 4399 yuan/ton to 4414 yuan/ton, MEG - naphtha spread increased from - 101.04 yuan/ton to - 97.23 yuan/ton, and MEG internal market price rose from 4463 to 4491 [2]. Industry Chain Start - up Situation - PX start - up rate remained at 78.11%, PTA start - up rate decreased from 78.04% to 77.49%, MEG start - up rate increased from 58.81% to 59.54%, and polyester load remained at 87.09% [2]. Polyester Product Data - **Polyester Filament**: POY150D/48F, FDY150D/96F, and DTY150D/48F prices remained unchanged. POY, FDY, and DTY cash flows decreased by 27.0. The long - filament production and sales rate increased from 37% to 52% [2]. - **Polyester Staple Fiber**: 1.4D direct - spinning polyester staple fiber price decreased from 6550 to 6535, the staple - fiber cash flow decreased from 171 to 129, and the short - fiber production and sales rate increased from 47% to 68% [2]. - **Polyester Chip**: Semi - bright chip price increased from 5780 to 5795, the chip cash flow decreased from - 49 to - 61, and the chip production and sales rate increased from 73% to 87% [2]. Device Maintenance - A 720 - million - ton PTA device of a supplier in East China reduced its load to 80 - 90% last night, and the recovery time depends on raw material logistics [2].