The annual price curve of polyester staple fiber (PSF) has traced a steep upward line in early September 2026. According to the benchmark price from Shengyi She, PSF stood at 8,222.50 yuan per ton on September 7, a 5.19% jump from 7,816.55 yuan at the start of the month, placing it near the upper end of its one-year range. This level is over 1,955 yuan above the year's low of 6,267.17 yuan, signaling a dramatic redistribution of profits and cost pressures across the supply chain over the past 12 months.
Price Positioning and Volatility Range
Annual statistics show the current price sits in the "high zone" of the year, yet it is not an absolute peak—the yearly maximum of 8,426.02 yuan remains about 203 yuan higher. This state of "high but not breaking the top" often reflects growing market divergence: bulls cite solid cost support, while bears worry about a pullback after demand is exhausted. Notably, the daily change on September 7 was zero, indicating a temporary halt after the rally—possibly a sign of waning upward momentum.
Over the past year, the average PSF price was 7,153.25 yuan per ton, with a median of 7,346.6 yuan. The current price is about 15% above the average, suggesting the market has deviated significantly from normal cost-based pricing. For weaving mills, this means raw material costs may rise by 3-5 percentage points as a share of total grey fabric costs, directly squeezing processing margins.
Cost Transmission and Demand Dynamics
This rally is not an isolated event. Upstream PTA and ethylene glycol have strengthened in tandem, lifting PSF's cost floor. However, sustainability hinges on demand. September is traditionally the prelude to the peak textile season, prompting downstream yarn mills to restock, but the pace of recovery in end-use garment orders remains uncertain. If this is merely "cost-push plus speculative restocking," prices may retreat quickly once the peak season disappoints; conversely, if terminal demand warms up simultaneously, the current level could become a new platform.
For buyers, this high-level stagnation is the most testing moment. Chasing highs increases risk—if crude oil or PTA corrects, PSF may follow. On the other hand, if peak-season orders concentrate, tight raw material supply could push prices above the previous high. Regional responses vary: traders in Jiangsu and Zhejiang have begun selling into strength, while downstream yarn mills maintain hand-to-mouth buying, with market sentiment turning cautious.
Impact Across the Supply Chain
High PSF prices most directly compress processing margins for pure polyester yarn and polyester-cotton yarn. If yarn mills cannot pass on costs to fabric mills, they may cut output or adjust product mixes, increasing the use of recycled PSF. This substitution effect could create temporary opportunities for recycled fibers, though quality consistency remains a constraint for large-scale replacement.
For exporters, rising raw material costs will push up offered prices, weakening cost competitiveness. Combined with exchange rate fluctuations and freight volatility, these factors will compound pressure on order profitability, especially against Southeast Asian competitors. Exporters are advised to focus on forward settlement and order-locking tools to avoid the double squeeze of "high-cost inventory and low-priced orders" if raw material prices fall.
Looking at the longer cycle, the annual average PSF price of 7,153 yuan is far below the boom levels of 2021-2022, indicating the industry is still in a post-overcapacity recovery phase. This rally appears more cost- and sentiment-driven than a trend reversal.