Price Divergence in Polyester Staple Fiber: The Logic Behind Water Treatment Fiber Balls vs. Cotton-Type Staple

On August 4, 2026, the domestic polyester staple fiber market showed a rare price gap: on the same trading day, water treatment fiber balls (ordinary grade) were quoted at 15,500 CNY/ton, while cotton-type polyester staple fiber (1.56dtex×38mm, melt-blown) was only 7,370-7,450 CNY/ton. The spread exceeded 8,000 CNY/ton, reflecting completely different pricing logic within the polyester staple category.

Market Background

This quote data comes from public industry platforms, involving two companies: Henan Kaijie Water Treatment Co., Ltd. and Hebei Chujiao Supply Chain Management Co., Ltd. Henan Kaijie offered a uniform 15,500 CNY/ton for ordinary fiber balls with diameters of 30mm, 40mm, and 50mm, delivered in Zhengzhou, Henan. Hebei Chujiao quoted 7,370 and 7,450 CNY/ton for Huahong brand premium cotton-type staple, delivered in Wuxi, Jiangsu.

It is noteworthy that although fiber balls and cotton-type staple belong to the same polyester staple category, their application scenarios are completely different. Fiber balls are mainly used for water treatment filtration, an environmental consumable; cotton-type staple is used for spinning, nonwovens, and other textile fields. This application difference directly leads to price positioning divergence, not a simple quality difference.

From an industrial belt perspective, Zhengzhou and Wuxi represent the distribution centers for water treatment materials and textile raw materials, respectively. Zhengzhou relies on the environmental protection industry demand in the Central Plains, while Wuxi is backed by the Yangtze River Delta textile cluster. The price differences also reflect regional supply and demand conditions.

Industrial Impact

The cotton-type polyester staple quote of 7,370-7,450 CNY/ton continues the low-price trend of melt-blown products in recent years. For textile mills, this means manageable raw material cost pressure, but it also hints at the shadow of overcapacity. The operating rate of the polyester staple industry has long remained around 70%, with new capacity continuously coming online, intensifying market competition.

In contrast, the 15,500 CNY/ton quote for fiber balls highlights the premium capability in the water treatment field. With stricter environmental policies, demand for industrial wastewater treatment and municipal sewage upgrading is strong. Fiber balls, as filter media, are favored for their corrosion resistance and easy backwashing. The high price also stimulates more companies to enter this niche market, potentially leading to capacity expansion and price corrections in the future.

For buyers, this price gap means they must clearly define their demand positioning. If purchasing for textile raw materials, they can continue to enjoy low-price dividends but need to be wary of upstream PTA price fluctuations. If purchasing for water treatment, they need to evaluate alternatives under high costs, such as polypropylene fiber balls or traditional media like quartz sand.

Practical Recommendations

For Buyers - For cotton-type staple used in textiles, consider futures hedging to lock in current low prices, but pay attention to quality differences between melt-blown and chip-spun products to avoid consistency issues. - For water treatment fiber balls, compare the filtration efficiency of different diameters (30mm/40mm/50mm) and choose based on actual working conditions, rather than blindly pursuing high-priced products. - Monitor inventory changes in distribution centers like Zhengzhou and Wuxi, adjust procurement rhythm when price spreads fluctuate, and use regional price differences to reduce costs.

For Foreign Trade Companies - When exporting cotton-type polyester staple, be aware of anti-dumping duty changes in target markets. Current low prices may trigger trade frictions, so consider diversifying export destinations. - For exporting water treatment fiber balls, emphasize the environmental concept, but provide third-party test reports to prove filtration performance meets international standards to support the high premium. - Establish long-term cooperation with suppliers in Henan and Jiangsu to secure stable supply, while paying attention to the impact of RMB exchange rate fluctuations on settlement.