As of September 1, polyester filament quotes in Changshu market showed a pattern of 'stable with selective gains': regular FDY grades held steady, while bright FDY 50D/24F and 75D/36F rose by 100-200 CNY/ton, and most DTY grades followed with a 100 CNY/ton uptick. Surging polyester raw material prices are the key driver behind this adjustment. For buyers, this signals a clearly elevated cost floor, narrowing the room for deeper price corrections.
Price Transmission Mechanism
Data shows FDY 68D/24F from Rongsheng Petrochemical remained flat at 9850 CNY/ton, while bright FDY 50D/24F increased from 9850 to 9950 CNY/ton, a gain of about 1%. DTY 150D/96F fixed weight from Shaoxing Yuandong posted the largest rise of 200 CNY/ton, reaching 10150 CNY/ton. This divergence reflects two factors: bright series benefit from relatively active downstream simulation silk demand, enhancing pricing power; textured yarns are more directly driven by POY costs and show higher elasticity.
On the raw material side, PTA and MEG prices have strengthened recently, directly compressing polyester filament margins. Polyester plants, with manageable inventories, opted for modest hikes rather than aggressive increases, indicating caution about demand recovery. For weavers, this means higher input costs, but limited ability to pass through to fabric prices, accumulating margin pressure.
Regional Industrial Belt Reaction
As a major polyester filament distribution hub in Jiangsu-Zhejiang, Changshu's quotes serve as a barometer for nearby belts like Shengze, Xiaoshan, and Tongxiang. In this adjustment, DTY from Taicang and Wujiang followed suit, indicating stable regional price differentials without disorderly competition. Among origins, leading producers like Rongsheng, Tongkun, and Xinfengming kept quotes unchanged, while smaller mills flexibly raised prices on select specs, showing that large enterprises prefer maintaining customer stickiness through scale advantages.
For downstream fabric suppliers, current filament prices sit at a mid-year level, but if raw material costs persist, autumn order margins may come under pressure. Historical patterns suggest filament price hikes lag raw materials, so if PTA continues to strengthen in the coming two weeks, a second round of increases is likely.
Outlook and Strategy
Overall, short-term filament prices are more likely to rise than fall, but gains are capped by end-demand. Currently, loom utilization is not at full capacity, and greige fabric inventories remain high, limiting the transmission of filament hikes to fabric prices. In early September, prices are expected to adjust narrowly upward; if raw materials retreat, some gains may be given back.