PTA Leads Fiber Chain Gains, Textile Raw Material Market Shows Divergence

On the last trading day of August, the textile raw material market delivered a report card far more complex than the surface numbers. According to business society monitoring data, on August 31, 2026, three textile commodities rose: PTA led with 1.45%, polyester staple fiber gained 0.93%, and cotton rose 0.85%; the only decliner was raw silk, down 0.21%. Behind the seemingly calm 0.18% average daily change lies a months-long tug-of-war between cost transmission and weak demand.

Cost Side: Persistent High Fever in PTA and Acrylonitrile

The year-on-year data deserves more attention. PTA surged 28.87%, acrylonitrile soared 44.12%, polyester filament series (POY, DTY, FDY) all rose over 21%, and spandex gained 21.65%. These figures indicate that the cost center of upstream petrochemical raw materials has systematically shifted upward over the past year, not a short-term fluctuation. PTA's single-day rise of 1.45% reflects a 90 yuan per ton jump from 6213.25 to 6303.50 yuan between August 28 and 31, driven by PX cost pressure and maintenance expectations.

Acrylonitrile's over-40% year-on-year surge puts immense cost pressure on downstream acrylic and ABS products. For textile enterprises, procurement budgets must be redrawn—last year's prices are no longer a reference. More critically, this rally is supply-driven, not demand-led, combined with high crude oil prices. If oil retreats, hoarders face inventory devaluation risks.

Intermediate Goods: Polyester Staple and Cotton's 'Follow-Up but Not Down'

Polyester staple fiber rose 0.93% daily and 19.58% year-on-year; cotton rose 0.85% daily and 20.17% year-on-year. Though similar in magnitude, their drivers differ. Polyester staple's rise is a direct cost pass-through from PTA, closely synchronized with feedstock. Cotton's rise stems from supply tightness before new harvest and weather speculation. Notably, cotton yarn 21S and 32S prices were flat, with year-on-year gains of only 5.89% and 5.63%, far below cotton's 20%—indicating sharply narrowing spreads in the spinning segment.

For cotton yarn 32S, at 24,875 yuan per ton against cotton at 18,419 yuan, and a 1.1 consumption coefficient, raw material cost alone exceeds 20,260 yuan. After processing, labor, and depreciation, spinners' margins are squeezed to historic lows. This pattern of 'raw materials up, yarn stable' reflects downstream fabric mills' and garment factories' resistance to high-priced yarn, blocking price transmission. Spinners face a dilemma: raise prices and lose orders, or keep prices and lose money.

Declining Item: Raw Silk's Independent Trend and Demand Warning

Raw silk was the only decliner, down 0.21% daily to 426,600 yuan per ton, with a year-on-year drop of 9.35%. Against the backdrop of broad chemical fiber gains, raw silk's persistent weakness stands out. This is no accident—cocoon supply is relatively ample, while downstream silk and home textile demand is sluggish, especially export orders affected by overseas consumption downgrades, leaving raw silk prices unsupported. Its decline reminds the market that not all textile raw materials rise with cost; weak demand can also dominate price trends.

For buyers, raw silk's downtrend may continue, but watch for supply disruptions during autumn cocoon purchasing. For silk and home textile exporters, low raw silk prices are favorable, but terminal order volumes remain the fundamental driver.

Industrial Implications of Price Divergence

This rally shows a clear 'more upstream, stronger' pattern: basic chemical raw materials like PTA and acrylonitrile gained the most, intermediate raw materials like polyester staple and cotton followed, while semi-finished goods like cotton yarn, polyester yarn, and viscose spun yarn remained almost flat. This stepwise decline in gains indicates that cost pressure is being absorbed by midstream players, while terminal demand lacks the strength to accept higher prices.

For foreign trade companies, export quotations must now be more precise in cost breakdown—quoting based on last month's raw material prices could turn orders into losses. It is advisable to include raw material price linkage clauses in contracts or shorten quotation validity. For factories, inventory management is critical: avoid excessive stockpiling at high prices, but too-low inventory risks material shortages; adjust dynamically based on order cycles.

Practical Recommendations

For Purchasers - For petrochemical-based raw materials like PTA and polyester staple, adopt a 'small batches, frequent orders' strategy, avoid bulk buying at peaks, and monitor crude oil trends and PTA maintenance schedules. - For semi-finished goods like cotton yarn and polyester yarn, use the current price stability window to sign medium-term price-lock contracts with suppliers to secure processing margins.

For Foreign Trade Enterprises - Include a validity period (7-15 days) in export quotations and add price adjustment clauses to prevent losses from raw material surges. - Watch for procurement opportunities in declining items like raw silk; if silk product exports are significant, consider increasing low-cost raw material inventory, but only after confirming existing orders.