On August 3, the domestic polyester staple fiber market showed a rare price gap: water-treatment filter balls in Zhengzhou were quoted at 15,500 RMB/ton, while cotton-type melt-blown staple in Wuxi was only 7,360-7,370 RMB/ton, a spread of 8,140 RMB. This is not a simple specification difference but a divergence in application scenarios and supply chain positions—filter balls serve as water-treatment media, while cotton-type staple is a spinning raw material with entirely different downstream logic.
Event Background
From the day's quotes, Henan Kaijie Water Treatment Co., Ltd. in Zhengzhou offered three grades of ordinary filter balls with diameters of 50mm, 40mm, and 30mm, all at 15,500 RMB/ton. These products were labeled "ordinary filter balls" without specifying weight or bulk density, leaving room for negotiation. Meanwhile, Hebei Chujiao Supply Chain Management Co., Ltd. in Wuxi quoted Huahong-brand polyester staple fiber, 1.56dtex*38mm, melt-blown cotton-type, at 7,360 and 7,370 RMB/ton, a 10 RMB difference indicating slight bargaining in the market.
Notably, filter ball quotes came from a water-treatment company, not a chemical fiber trader, suggesting pricing logic closer to environmental consumables than textile raw materials. Ordinary filter balls are commonly used in wastewater treatment filtration, requiring specific surface area and hydrophilicity. Production costs differ little from standard cotton-type staple, but market supply-demand structures differ—water-treatment projects often involve small batches and low frequency, giving suppliers stronger pricing power.
Industry Impact
What does an 8,000 RMB spread mean? For downstream buyers, mistaking filter balls for textile raw materials would double costs; conversely, substituting cotton-type staple for filter balls may cause filtration inefficiency and environmental incidents. Therefore, procurement must clarify application scenarios, not just order by the name "polyester staple fiber."
For cotton-type staple itself, the 7,360-7,370 RMB quote sits in the middle of recent ranges, reflecting weak restocking willingness among spinners. Melt-blown technology offers cost advantages, but downstream pure polyester yarn and polyester-cotton yarn demand remains sluggish, limiting upward price momentum. For exporters, domestic-foreign cotton price spreads, RMB exchange rate fluctuations, and order shifts from Southeast Asia could affect future export competitiveness.
Regional price differences also deserve attention: the gap between Zhengzhou and Wuxi, besides product use, is influenced by logistics costs and local industrial support. Wuxi, a textile hub, has active short-fiber trading with more market-driven prices; Zhengzhou focuses on water-treatment consumables distribution with more rigid pricing.