The polyester staple fiber market is experiencing an unprecedented price divergence. On July 3, 2026, industry public quotes showed industrial-grade fiber balls for water treatment (30-50mm diameter) remained firm at 15,500 yuan/ton, while textile-grade cotton-type polyester staple fiber (1.56dtex*38mm) traded in a range of 6,940-7,320 yuan/ton. The spread exceeds 8,000 yuan/ton, more than double. This extreme divergence is not accidental but a direct reflection of structural demand differences in downstream sectors.
Industrial-Grade Fiber: High Ground Supported by Inelastic Demand
The high price of water treatment fiber balls is underpinned by continuous expansion in the environmental and water treatment industries. The 15,500 yuan/ton quote from Henan Kaijie Water Treatment Co., Ltd. is roughly flat year-on-year, indicating strong support at elevated levels. These fiber balls are primarily used in industrial wastewater filtration and circulating water purification, with downstream customers including municipal projects and chemical plants that have stable procurement cycles and relatively low price sensitivity. From a regional perspective, Zhengzhou, Henan, as a major distribution hub for water treatment materials, sets a benchmark for national pricing.
It is noteworthy that fiber balls also use polyester staple fiber as raw material, but their processing involves special crimping and heat-setting steps, adding much higher value than regular textile-grade fibers. This means when textile-grade prices are low, some capacity may shift to industrial-grade products, potentially squeezing textile-grade supply.
Textile-Grade Staple Fiber: Widening Regional and Brand Spreads, Procurement Window Emerges
In contrast to the firmness in the industrial segment, textile-grade cotton-type polyester staple fiber prices remain weak and volatile. Zhejiang Tianchen Textile Supply Chain Co., Ltd. reported significant price differences across brands and origins: Zhonglei brand (Huzhou, Zhejiang) at 7,320 yuan/ton, Xintuo brand (Xuzhou, Jiangsu) at 7,200 yuan/ton, Yida brand (Suqian, Jiangsu) at 7,150 yuan/ton, and Huahong brand (Wuxi, Jiangsu) at only 6,940 yuan/ton. The high-low spread reaches 380 yuan/ton, over 5%.
Regionally, Huahong brand in Wuxi, Jiangsu, offers the lowest price, closely linked to local polyester chain overcapacity and intense competition. Suqian and Xuzhou prices are in the middle, while Huzhou is the highest, reflecting logistics costs and regional supply-demand dynamics. For downstream textile mills, current prices are near or below the cash cost line for some producers, limiting further downside, but a rebound still requires demand-side catalysts.
Industry Transmission: Spinning Mills Face Strategy Adjustments
Textile-grade polyester staple fiber is the main raw material for cotton-type yarn, directly affecting mill costs and profits. The current 6,940-7,320 yuan/ton range is at a relatively low level since 2025. Spinning mills should focus on two key points: first, the widened spread creates arbitrage opportunities—price differences between brands and regions are sufficient to cover short-haul logistics, making cross-regional procurement cost-effective; second, the high margins in industrial-grade products may divert capacity, so if textile-grade demand recovers, supply elasticity could be lower than expected.
From a broader perspective, this structural price divergence in polyester staple fiber is a microcosm of the entire chemical fiber industry shifting from 'big and comprehensive' to 'specialized and refined.' Going forward, enterprises producing only generic textile-grade staple fiber will face continued margin compression, while those with differentiated product capabilities—such as industrial-grade, functional, or recycled fibers—will command higher pricing power.