Divergence in Bulk Textile Raw Materials: Acrylonitrile vs PTA Reveals New Supply Chain Dynamics

On July 17, 2026, commodity price monitoring data revealed a nuanced picture: the textile sector's daily average change was only -0.01%, but internal divergence among varieties was significant. Acrylonitrile and polyester staple fiber posted gains, while PTA, polyester POY, and raw silk declined. This structural disparity is not accidental; it reflects the direct interplay of cost transmission along the supply chain and terminal demand dynamics.

Signals Behind the Price Moves

Leading the gainers, acrylonitrile rose 0.35% to 9,600 yuan/ton from 9,566.67 yuan/ton, with a year-on-year increase of 22.29%, second only to PTA among monitored varieties. Polyester staple fiber edged up 0.30% to 7,469.43 yuan/ton, up 12.73% YoY. The rise in acrylonitrile is linked to tight supply of upstream propylene due to maintenance shutdowns at propane dehydrogenation units, while polyester staple fiber benefits from seasonal demand recovery in nonwovens and filling materials.

On the downside, PTA fell 0.44% to 5,985.91 yuan/ton from 6,012.25 yuan/ton. Despite a 25.68% YoY gain, the short-term correction was the sharpest. Polyester POY dropped 0.23%, and raw silk fell 0.14%. PTA's decline is directly related to softening PX prices and expectations of production cuts by polyester plants. Polyester POY faces dual pressure from lower PTA costs and slower purchasing by weaving mills.

Notably, prices of cotton yarn 21S, cotton yarn 32S, viscose staple fiber, spandex, rayon yarn, polyester FDY, nylon DTY, nylon FDY, and nylon POY remained flat. This indicates a 'cost transmission resistance zone'—upstream price changes are not quickly passed downstream, reflecting cautious sentiment in the textile market.

Impact on Industrial Clusters and Procurement Decisions

For PTA and polyester hubs like Shaoxing and Xiaoshan, the short-term PTA correction will compress PTA producers' margins but benefit polyester plants by lowering raw material costs. For weaving clusters like Shengze and Changxing, the drop in polyester POY suggests potential cost savings for greige fabric production, provided the decline extends to DTY and FDY. The flat prices of DTY and FDY indicate weavers are still on the sidelines.

The rise in acrylonitrile is a direct positive for acrylic fiber producers in Jilin and Shanghai, but downstream exporters of acrylic yarn and blankets should be wary of margin erosion. Raw silk's 10.34% YoY decline signals persistent weak demand or inventory overhang in the silk and cocoon industrial belt of Guangxi and Zhejiang.

From a procurement strategy perspective, the current dip in PTA and polyester POY offers an opportunity for downstream polyester and weaving mills to stock up at lower levels, especially given that PTA is still up over 25% YoY. The rise in acrylonitrile and polyester staple fiber suggests buyers should accelerate price locking to avoid further cost increases.

Practical Recommendations

For Buyers - For PTA and polyester POY: If production is planned for late July to August, consider signing spot or near-month contracts in the 5,980-6,000 yuan/ton range for PTA to lock in current corrected costs. - For acrylonitrile and polyester staple fiber: Shorten procurement cycles and negotiate weekly floating price agreements with suppliers to hedge against sudden price spikes due to tight supply. - Monitor flat prices of cotton yarn and viscose: If raw material divergence continues, cotton yarn prices may see a catch-up move in August; adjust inventory levels flexibly.

For Exporters - For polyester POY/DTY export orders: Include a raw material price adjustment mechanism in contracts, using weekly average PTA prices as a benchmark, with renegotiation triggers if changes exceed a set threshold. - For acrylic product exports (e.g., acrylic yarn, faux fur): With acrylonitrile at a yearly high, build in at least a 5% profit buffer and negotiate cost-sharing clauses with clients. - For raw silk exporters: The 10.34% YoY decline gives overseas buyers more bargaining power; maintain unit prices by upgrading product quality or developing differentiated varieties such as organic or colored silk.