In the 34th week of 2026 (Aug 24-28), textile commodity prices showed marked divergence: polyester filament yarns rallied strongly while upstream materials like acrylonitrile and PTA recorded notable declines. This tug-of-war signals a redistribution of profits along the supply chain and sends dual messages of recovering downstream demand and easing upstream costs.
Market Divergence: Polyester Leads, Raw Materials Under Pressure
Weekly monitoring data show that polyester POY, DTY, and FDY rose 2.00%, 1.76%, and 1.70% respectively, ranking top three in gains, with year-on-year increases exceeding 21%. Meanwhile, acrylonitrile fell 4.46%, PTA dropped 3.67%, and polyester staple fiber declined 0.96%. Overall, the textile sector's average change was only 0.03%, but internal structure was starkly polarized.
The strong performance of polyester filament contrasts sharply with the decline in PTA, its main raw material. Typically, lower PTA prices should reduce production costs for polyester, but polyester prices rose instead, implying expanding processing margins. This divergence may stem from stronger restocking demand from downstream weaving mills, while PTA faces loose supply-demand and high inventory pressure, dragging its price down.
Industry Logic: Demand Recovery vs. Cost Easing
Polyester filament's year-on-year gains exceeding 20% far outpaced other categories, indicating recovering orders in apparel and home textiles. POY and DTY, as key raw materials for textured yarn, often lead fabric price movements, suggesting potential upward adjustments in fabric costs soon. For sourcing managers, this is a critical window to lock in filament prices, but they should be wary of lagged cost transmission from falling raw materials.
Meanwhile, declines in acrylonitrile and PTA reflect oversupply or weak demand in upstream chemical materials. Acrylonitrile is still up 44.12% year-on-year, indicating a correction after sharp gains, but it may continue to pressure cost expectations for downstream products like acrylic fiber and ABS. PTA's decline may ease cost pressures for polyester plants, but if sustained, it could limit further price increases for polyester filament.
Regional and Category Transmission: Divergent Responses
By category, nylon series (DTY, POY, FDY) rose 0.29%-0.97%, up 14%-21% year-on-year, indicating improving conditions in the nylon chain. Raw silk inched up 0.85% but fell 9.16% year-on-year, suggesting the silk industry remains in a destocking cycle with slow demand recovery. Viscose staple fiber and viscose yarn posted moderate gains, up 5%-10% year-on-year, showing stable cellulose fiber markets.
In the cotton chain, cotton inched up 0.06%, cotton yarn prices were flat, but year-on-year gains of 5.6%-5.9% reflect cost support from cotton, yet insufficient terminal orders prevent yarn prices from following. Spandex prices were unchanged, up 21.65% year-on-year, indicating stable demand but high prices limiting further increases.
For textile clusters like Keqiao and Shengze, rising polyester filament will directly push up greige fabric costs, while falling PTA may partially offset, leaving margins relatively acceptable. However, foreign trade firms need to monitor exchange rate fluctuations and overseas demand changes to avoid mispricing due to raw material volatility.