In the third week of July 2026, the textile commodity market exhibited a rare degree of divergence in recent years. Acrylonitrile led all products with a 5.11% weekly surge, followed by PTA (+1.48%) and polyester staple fiber (+1.30%). In contrast, cotton yarn 32S and 21S posted declines of 0.60% and 0.57%, respectively, making them two of only three declining products in the monitored basket. The overall average weekly change was a modest 0.54%, but the internal divergence tells a far more complex story.
Upstream Raw Materials Strengthen, Cost Pass-Through Intensifies
The sharp weekly jump in acrylonitrile is not an isolated event. On a year-on-year basis, the product has surged 22.29%, while PTA has climbed an even steeper 25.68%. These upstream basic raw materials' sustained strength has directly raised the cost baseline for downstream chemical fiber products. Polyester staple fiber, polyester DTY, and polyester POY all recorded positive weekly gains, with polyester staple fiber up 1.30% (YoY +12.73%) and polyester POY up 0.69% (YoY +19.74%).
Notably, spandex prices remained flat for the week but showed a 22.34% YoY increase, indicating that previously accumulated cost pressures have yet to be fully absorbed. Nylon series products exhibited similar characteristics: nylon POY rose 0.74% weekly (YoY +11.48%), and nylon DTY edged up 0.25% (YoY +9.27%). This collective strength in upstream products suggests that the chemical fiber chain is undergoing a cost-driven price revaluation.
Cotton Yarn Bucks the Trend, Signaling Softening End Demand
In stark contrast to upstream raw materials, cotton yarn prices saw a small but clear correction. Cotton yarn 32S fell 0.60% weekly, and cotton yarn 21S dropped 0.57%. While the declines are modest, they stand out in a generally rising market. The weakness in cotton yarn is not coincidental: cotton lint itself rose only 0.13% for the week, with a YoY gain of 15.31%—far below the surges in PTA and acrylonitrile, indicating relatively limited cost support from the cotton side.
The softening of cotton yarn more directly reflects sluggish demand from the weaving and garment sectors. As a key intermediate linking cotton to fabric, cotton yarn prices are often more sensitive to end-user demand than upstream raw materials. When upstream chemical fiber prices rise on cost-push factors while cotton yarn falls, the signal is clear: downstream buyers are destocking and taking a wait-and-see approach toward higher-priced cotton yarn.
Industry Impact: Profit Distribution Under Restructuring
This divergent trend—upstream rising, downstream falling—is reshaping profit distribution across the textile supply chain. Chemical fiber raw material suppliers maintain profit margins through cost pass-through, while cotton spinning mills and weaving factories face the double squeeze of rising input costs and stagnant product prices.
Viscose staple fiber and polyester yarn prices remained flat for the week; rayon yarn and polyester FDY also held steady, indicating these products are at a price equilibrium point in the current tug-of-war. Raw silk fell 0.14% weekly and has dropped 10.34% year-on-year, making it the only natural protein fiber in decline among monitored products. This further confirms a shift in end-consumption patterns, with man-made fibers gradually encroaching on natural fiber market share.
For procurement professionals, inventory management strategies require recalibration in this environment. The upward trend in upstream raw materials shows no clear peak, but the price ceiling for downstream finished goods has already become visible, implying rising carrying costs for intermediate inventory.