On September 1, 2026, the polyester filament market in Wangjiangjing delivered a telling set of prices: FDY 50D/24F from multiple mills stood at 10,050 CNY/ton, up 50-100 CNY from two days earlier, while POY 150D/48F jumped 200 CNY to 9,100 CNY/ton, leading the round of hikes. Meanwhile, most DTY grades held steady, with only a few items edging up 40-50 CNY. This price structure—aggressive upstream, cautious downstream—is reshaping the procurement rhythm of weaving mills.
Market Background
According to publicly available industry quotes, the increases were concentrated in FDY and POY. In the FDY semi-dull series, mainstream 50D/24F prices moved from the 9,900-10,000 CNY range to 10,000-10,050 CNY, up 50-100 CNY; 75D/36F and 100D/48F rose 100 CNY; 150D/96F gained 50-100 CNY. FDY bright series followed, with 50D/24F and 75D/36F up 50 and 100 CNY, respectively. POY showed stronger elasticity: 150D/48F surged 200 CNY, while 100D/96F and 300D/96F each rose 100 CNY. However, fine-denier items like 50D/48F and 75D/96F held flat for two consecutive days, indicating mills' firm stance on maintaining prices for these specs.
Notably, DTY and network yarn adjustments lagged. DTY 75D/36F only inched up 40 CNY, while 150D/48F and 300D/96F remained unchanged. Among network yarns, 75D/72F and 100D/36F each rose 100 CNY, but 200D/96F and 300D/96F only gained 100 CNY. This "raw materials up, finished products stable" pattern suggests that the texturizing segment's profit margins are being squeezed, with mills preferring to absorb cost pressure through inventory digestion.
From an industrial cluster perspective, Wangjiangjing, as a major polyester filament distribution hub in Jiangsu and Zhejiang, often leads surrounding markets in price movements. In this round, major producers like Rongsheng, Tongkun, and Xinfengming moved in unison, while smaller mills in Changshu and Yixing posted slightly higher increases, reflecting that large mills' bargaining power in raw material procurement translates into better cost buffers. For buyers, this means large mills offer relatively stable supply, but smaller mills may follow with quicker hikes.
Industrial Impact
The strong surge in upstream polyester feedstock is the direct driver. From a cost perspective, PTA and MEG prices have been strengthening recently, forcing polyester plants to pass on pressure downstream. However, the increases in FDY and POY have not fully covered the rise in raw material costs, meaning polyester margins are still narrowing. For downstream weaving enterprises, higher filament prices will directly push up greige fabric costs. For conventional varieties like chun ya fang or polyester taffeta that rely heavily on FDY, the cost increase could translate to 0.02-0.05 CNY per meter.
On the demand side, FDY 75D/144F is selling well, and DTY 150D/188F is seeing rising buying interest. These two specs correspond to autumn apparel fabric demand. 75D/144F is commonly used in silk-like fabrics, while 150D/188F is often used in high-density taslan, indicating that downstream orders are not broadly recovering but are concentrated in specific niches. This structural demand suggests that the filament price hike is not a broad rally but is underpinned by rigid procurement for certain specs.
For traders, the current price spread offers arbitrage opportunities: the gap between POY and DTY has widened to about 1,000 CNY/ton, higher than normal processing fees. This may attract some texturizing mills to increase POY purchases and boost DTY output, which could eventually balance DTY supply and demand. Meanwhile, since POY has risen more than FDY, weaving mills could potentially gain a cost advantage by substituting FDY for some POY raw materials, but this requires process adjustments and is unlikely to be implemented on a large scale in the short term.
Practical Recommendations
For Buyers - Monitor major mills' quotes closely; if raw materials continue to surge, FDY 50D/24F may break 10,100 CNY, so consider locking in forward orders as needed. - For regular DTY specs, current prices are relatively stable; consider increasing purchase volumes to hedge against potential future hikes. - Prioritize partnerships with major mills like Rongsheng and Tongkun, as their price adjustments are more moderate and supply stability is higher.
For Exporters - Build a 5% cost buffer into export quotes to avoid margin erosion from raw material price increases. - Keep a close watch on upstream PTA futures; if raw material gains exceed 3%, consider negotiating price adjustment clauses with clients. - For hot-selling specs like 75D/144F and 150D/188F, lock in shipping schedules in advance to avoid extra costs from delivery delays.
In summary, the current Wangjiangjing polyester filament market is characterized by "strong raw materials, weak finished products." Prices still have upward momentum in the short term, but the magnitude may be constrained by downstream acceptance. It is advisable for all parties along the chain to maintain flexible inventory strategies and navigate the volatility with well-timed procurement and sales decisions.