Demand from the water treatment industry for textile raw materials is shifting from volatile growth to inelastic support. On July 26, 2026, Henan Kaijie Water Treatment Co., Ltd. released fiber ball quotations showing uniform prices of 15,500 CNY/ton for three specifications (diameters 30mm, 40mm, and 50mm), with zero fluctuation for consecutive days. Behind this data lies subtle shifts in the supply-demand dynamics of the water treatment filter media market.
The Industrial Logic Behind Price Rigidity
The sustained stability of fiber ball prices is no accident. On the supply side, fiber balls use polyester staple fiber as raw material, which experienced narrow-range fluctuations in the first half of 2026 due to crude oil price volatility. National Bureau of Statistics data shows that polyester staple fiber prices fluctuated within a 5% range year-on-year, providing a stable cost anchor for downstream fiber balls.
On the demand side, driven by continuous environmental policies, the water treatment industry maintains high utilization rates in industrial wastewater treatment and municipal sewage upgrading projects. Industry data indicates that filter media procurement grew approximately 12% year-on-year in the first half of 2026, with fiber balls gaining substitution share in deep treatment processes due to their high specific surface area and filtration accuracy. When demand growth stabilizes at double digits while supply capacity expansion remains controlled, price rigidity becomes the market norm.
Industrial Cluster Dynamics and Upstream-Downstream Transmission
The Zhengzhou industrial cluster, where Henan Kaijie is located, has formed a water treatment filter media ecosystem in recent years. Unlike traditional textile clusters such as Keqiao and Shengze, companies here focus more on functional textile end applications. Fiber ball manufacturers directly connect with end-users like wastewater treatment plants and power stations, with fewer intermediate links, enabling efficient price transmission.
This means that once upstream polyester staple fiber prices fluctuate, fiber ball quotations will react much faster than ordinary fabrics. For buyers, the 15,500 CNY/ton price may seem stable, but close monitoring of the polyester industry chain's inventory cycle is essential. When PTA and ethylene glycol prices show a trend upward, fiber ball production costs could be pushed up 5%-8% within 2-4 weeks.
Category Differentiation and Structural Opportunities
Fiber balls represent only the tip of the iceberg for water treatment textiles. Currently, upgraded products such as modified fiber balls, high-efficiency fiber bundles, and comet-shaped fiber filter media are penetrating the market rapidly. These products require higher raw material standards, such as hydrolysis-resistant and acid/alkali-resistant modified polyester staple fiber, with quotations typically 20%-30% higher than standard fiber balls.
For textile companies, this provides a clear category upgrade path: start with standardized fiber balls and gradually extend to high-value functional filter media. The key lies in establishing technical collaboration with downstream water treatment engineering firms, rather than simply competing on raw material costs.