The 34th week of 2026 (August 24-28) witnessed a notable divergence in textile commodity prices: polyester filament products collectively rose while upstream raw materials like acrylonitrile and PTA suffered significant declines. This opposite movement between upstream and downstream is rare in recent years, reflecting not only a redistribution of profits along the industrial chain but also signaling where the next phase of market competition will focus.
Market Background
Monitoring data shows that among the textile sector commodities, 10 products rose on a week-over-week basis, with polyester POY, DTY, and FDY leading the gains at 2.00%, 1.76%, and 1.70% respectively. Meanwhile, acrylonitrile dropped 4.46%, PTA fell 3.67%, and polyester staple fiber slipped 0.96%. The overall average weekly change was a mere 0.03%, but the internal structure was far from calm.
Notably, polyester filament prices are still over 21% higher year-on-year, while PTA is up 26.54% and acrylonitrile has surged 44.12% compared to the same period last year. This means that despite this week's pullback in raw materials, the overall cost base remains far above last year's levels. For downstream weaving enterprises, raw material cost pressure has not truly eased; it has merely shifted from upstream to midstream.
From an industrial belt perspective, in major polyester filament production areas such as Tongxiang and Xiaoshan, quotes were generally raised this week, with some manufacturers even suspending sales. The decline in PTA is linked to the restart of some plants and increased supply expectations. This rise in one segment and fall in another actually reflects different supply-demand dynamics within the polyester chain.
Industry Impact
The counter-trend rise in polyester filament is most directly attributable to marginal improvements in end-use orders. In late August, demand for autumn/winter fabric sampling and replenishment orders was released, especially for conventional varieties like simulation silk and polyester taffeta, which saw faster turnover. For buyers, this means that if they did not lock in prices earlier, current procurement costs are about 2% higher than at the beginning of the month, further squeezing profit margins.
The declines in PTA and acrylonitrile send another signal: upstream raw material supply may be loosening. Weaker PTA prices should theoretically reduce the production cost of polyester filament and suppress its price. But this week, polyester filament rose instead of falling, indicating that demand-side pull is stronger than cost-side drag. Whether this divergence persists depends on the sustainability of subsequent orders.
For foreign trade companies, the current price structure actually offers an operational window: raw material prices are correcting while product prices remain firm, which means that midstream processing margins are expanding temporarily. However, this window may be short-lived, because once upstream supply continues to increase and cost support weakens, polyester filament prices may also follow suit.
Another category worth attention is nylon. This week, nylon DTY, POY, and FDY rose by 0.97%, 0.86%, and 0.29% respectively. Although the gains are smaller than polyester, the trend is steady. Nylon is mainly used in sportswear, outdoor gear, and other high-value-added products. Its rise reflects rigid demand driven by consumption upgrades. In contrast, cotton yarn and spandex prices remained flat, indicating that the traditional cotton spinning chain is still in a wait-and-see mode.