Polyester Staple Fiber Price Divergence: High Prices for Water Treatment Fiber, Textile Grades Under Pressure

On June 5, 2026, the polyester staple fiber market exhibited a rare price divergence: water treatment fiber balls (30-50mm diameter) were quoted at 15,500 RMB/ton, while textile-grade 1.56dtex×38mm cotton-type polyester staple fiber prices ranged between 7,690 and 7,840 RMB/ton. The spread of over double the price is historically unusual for polyester staple fiber, highlighting fundamentally different supply-demand dynamics across application sectors.\n\n## Water Treatment Fiber: Rigid Environmental Demand Supports High Prices\n\nWater treatment fiber balls are mainly used in industrial wastewater, municipal sewage, and circulating water systems as filtration media, falling under environmental consumables. The current quote of 15,500 RMB/ton, nearly double that of textile-grade fiber, stems from two core factors: first, tightening environmental regulations have created rigid demand for filter media with short replacement cycles; second, production requires specialized raw materials and processing, with capacity concentrated among a few players like Henan Kaijie, leading to limited market supply. From a procurement perspective, water treatment facilities prioritize filtration efficiency and service life over price sensitivity, enabling the high quotation to persist.\n\n## Textile-Grade Polyester Staple Fiber: Narrowing Brand Spreads, Market Under Pressure\n\nIn contrast, textile-grade polyester staple fiber prices on the same day showed narrowing inter-brand spreads and increased regional concentration. Quotes from Jiangsu Province, the main production base, showed: Huahong at 7,690 RMB/ton (the lowest), Sanfangxiang at 7,800, Huaxicun at 7,810, and Xintuo and Yida both at 7,840. The maximum spread among brands was only 150 RMB/ton, indicating a market lacking significant pricing power, where companies compete more on cost control than brand differentiation.\n\nRegionally, all quoted companies were traders (Baoding Nawei New Material Technology) based in Xuzhou, Wuxi, and Suqian, Jiangsu, with no quotes from traditional polyester staple fiber hubs like Henan or Zhejiang. This suggests that current market liquidity is concentrated in the southern-northern Jiangsu supply chain, with lower trading activity in other regions. For downstream spinning mills, the current price range implies lower raw material costs compared to last year, but without a clear recovery in end-apparel orders, restocking intentions remain cautious.\n\n## Upstream-Downstream Transmission: Weakening PTA Cost Support, Squeezed Processing Margins\n\nThe main raw material for polyester staple fiber is PTA (purified terephthalic acid). Since Q2 2026, PTA prices have been on a volatile, slightly bearish trend due to crude oil fluctuations and new capacity additions. Based on current polyester staple fiber prices of 7,690-7,840 RMB/ton, after deducting PTA and processing costs, profit margins for staple fiber producers have narrowed to near industry average breakeven levels. Some small and medium-sized producers may face production cuts or need to shift product lines.\n\nA notable development is the widening price gap between water treatment fiber and textile-grade fiber, which may attract some textile-grade capacity to convert to water treatment fiber production. However, conversion requires equipment modifications and process adjustments, making large-scale shifts unlikely in the short term. Therefore, without a substantial recovery in textile end-demand, textile-grade polyester staple fiber prices are expected to remain in a low, volatile range.\n\n## Practical Recommendations\n\n### For Buyers\n- Textile-grade polyester staple fiber is currently at a low price point, but bulk stockpiling is not advisable. Recommend purchasing based on orders and monitoring PTA futures; if raw material prices rebound, consider locking in short-term contracts.\n- Water treatment fiber balls remain high and supply is concentrated. Recommend signing annual framework agreements with key suppliers like Henan Kaijie to avoid price spikes from spot purchases.\n\n### For Producers\n- Textile-grade staple fiber producers should strictly control inventory to avoid product accumulation from fluctuating end-orders. Consider increasing raw material stocks when PTA prices are low to hedge against compressed processing margins.\n- For companies with process modification capabilities, evaluate the feasibility of shifting to water treatment fiber or functional differentiated staple fibers (e.g., flame-retardant, antibacterial) to escape homogeneous price competition.