15,500 RMB per ton—that was the price quoted by Henan Kaijie Water Treatment Co., Ltd. on June 27, 2026, for common fiber balls in three diameters (30mm, 40mm, 50mm), all at the same level.
This figure may not seem dramatic, but against the backdrop of frequent price fluctuations in chemical fiber raw materials, it reveals an often-overlooked fact: the price resilience of water-treatment-grade polyester staple fiber far exceeds that of conventional textile-grade staple fiber.
Supply-Demand Logic Behind Static Prices
Henan Kaijie, a specialized producer of water treatment materials, targets industrial wastewater treatment and circulating water filtration applications. Its end customers are typically power plants, chemical factories, and municipal sewage treatment plants, which have relatively stable procurement cycles and lower price sensitivity than the textile-apparel supply chain.
Industry public data shows that demand for water treatment fiber balls has grown at an average annual rate of 5%-8% over the past three years, driven by stricter environmental policies and industrial wastewater discharge standards. On the supply side, the price of polyester chip (raw material for polyester staple fiber) remained in the 6,500-7,000 RMB/ton range in Q2 2026, with volatility under 5%, providing a stable cost anchor for downstream products.
What does this mean? While textile-grade polyester staple fiber frequently adjusts prices due to fluctuations in garment orders, water-treatment-grade fiber balls enjoy pricing stability thanks to their "application moat."
Regional Industrial Cluster Mapping
Henan Kaijie is based in Zhengzhou, Henan Province—a location that is no coincidence. Zhengzhou and its surrounding areas host a significant cluster of water treatment equipment and materials companies, including filter media, membrane modules, and activated carbon producers. This regional agglomeration reduces logistics and coordination costs, enabling local companies to maintain relatively consistent pricing.
In contrast, the main production areas for textile-grade polyester staple fiber are concentrated in coastal provinces like Zhejiang, Jiangsu, and Fujian, where prices are more directly influenced by export orders, exchange rates, and crude oil prices. Henan's water treatment materials cluster is more domestic-demand-driven, with a price fluctuation rhythm distinctly different from that of coastal textile industrial belts.
Practical Implications for Buyers and Factories
The current price stability does not mean the market is static. In fact, the production process for water treatment fiber balls differs from that of ordinary polyester staple fiber—it requires special crimping and heat-setting treatments to ensure filtration efficiency and backwash performance. This demands higher equipment investment and process control from factories.
For Buyers - Monitor polyester chip price trends: Although current prices are stable, if crude oil prices experience sharp fluctuations, cost transmission has a 3-6 month lag. Consider locking in long-term orders in advance. - Verify product specification-to-application match: Fiber balls with 30mm and 50mm diameters have different filtration precision. Choose based on the suspended solid particle size in the wastewater to avoid overpaying or misusing.
For Factories - Optimize production processes to reduce energy consumption: Energy accounts for about 20% of the cost of producing water treatment fiber balls. Introducing variable-frequency drives and waste heat recovery can reduce per-ton costs by 5%-8%, enhancing price competitiveness. - Expand differentiated product lines: Develop modified fiber balls (e.g., antibacterial, oleophilic) targeting niche markets such as petrochemicals and food processing to avoid price wars on standard products.
Overall, the application of polyester staple fiber in non-textile fields is becoming a new growth driver for the industry. When textile demand weakens, niche markets like industrial filter media and geotextiles provide an important buffer. Henan Kaijie's price quotation, though small, reflects the structural differentiation occurring in the polyester staple fiber supply chain: commodity-grade products face intense price competition, while specialty-grade products rely more on application depth and technological barriers.