15,500 yuan per ton. That is the uniform price Henan Kaijie Water Treatment Co., Ltd. quoted for three different specifications of fiber balls on June 27. From 30mm to 50mm in diameter, the price remains unchanged. Against the backdrop of overall pressure in the polyester staple fiber market, this pricing signal warrants scrutiny: is it price rigidity, or is demand structure undergoing a visible shift?
Market Anomaly: Pricing Independence of Water Treatment Fibers
Fiber balls, as a downstream deep-processed product of polyester staple fiber, are primarily used in industrial wastewater treatment and circulating water filtration. Unlike conventional textile-grade polyester staple fiber, their pricing logic is more dependent on the prosperity of the water treatment industry than on the supply-demand dynamics of the textile chain. At 15,500 yuan/ton in Zhengzhou, with raw material costs for conventional polyester staple fiber at around 7,000–8,000 yuan/ton, the markup exceeds 90%. This implies high added value in the fiber ball processing stage and relatively low price sensitivity among end users.
Notably, prices for different specifications from the same brand are identical. This typically occurs in two scenarios: either demand is insensitive to specification differences, with buyers prioritizing supplier service capabilities, or the market is in a weak equilibrium, where sellers simplify pricing strategies to reduce transaction costs. According to industry data, demand for water treatment fiber balls grew by about 12% year-on-year in the first half of 2026, but supply has not expanded significantly, providing a basis for price rigidity.
Industry Impact: Transmission Chain from Raw Materials to End Users
Upstream raw materials for polyester staple fiber—purified terephthalic acid (PTA) and monoethylene glycol (MEG)—saw increased price volatility in Q2 2026, with PTA spot prices fluctuating in the 5,800–6,200 yuan/ton range. Cost transmission downstream has been uneven: textile-grade polyester staple fiber, due to overcapacity, has seen price increases far below those of raw materials; while water treatment fiber balls, thanks to technological barriers and customized services, have successfully passed on cost pressures to end users.
What does this divergence mean? For polyester staple fiber producers, non-textile fields such as water treatment and environmental protection are emerging as new profit growth points. Data shows that gross margins for fiber ball manufacturers typically range from 30% to 40%, far exceeding the less than 10% margin for conventional polyester staple fiber. However, entry barriers exist: products must pass water filtration efficiency certifications, and downstream customers are mostly large industrial parks and municipal wastewater treatment plants, with long order cycles and slow payment terms.
- For buyers: whether the 15,500 yuan/ton price is reasonable should be evaluated based on water treatment effectiveness and replacement frequency.
- For factories: raw material cost risks can be partially hedged through long-term contracts or futures hedging.
- For foreign trade companies: water treatment markets in Southeast Asia and the Middle East are growing rapidly, and fiber ball export prices may command a 10%–15% premium.