On July 19, the latest quotations from the Wangjiangjing polyester filament market showed price increases of 50 to 150 yuan per ton for most FDY and POY specifications, while DTY series prices remained unchanged. This round of price hikes is not a broad-based rally but a clear divergence by product type—fine-denier FDY and some medium-coarse POY have led the gains, while DTY, due to cautious purchasing by downstream texturing mills, has barely budged.
The tug-of-war between cost and demand
The direct driver of this round of price increases comes from upstream. The recent strength in PTA and MEG prices has pushed up polymerization costs, forcing polyester filament producers to pass on cost pressure through price hikes. However, it is worth noting that the price increases have not triggered panic stockpiling. Data shows that FDY 50D/24F from multiple origins uniformly rose 50 yuan/ton to around 9,350 yuan/ton, while FDY 150D/96F prices remained stable at 8,300 yuan/ton for consecutive periods, indicating significant differences in downstream demand elasticity across specifications.
The logic behind the strong performance of fine-denier yarns lies in the sustained preference of end-use apparel fabrics for lightweight, high-density products. The consumption of FDY in specifications below 75D on water-jet looms has been stable. In contrast, coarser denier yarns (150D and above), which are mainly used in industrial applications such as luggage fabrics and tarpaulins, have not seen a clear increase in orders.
The price increases in the POY segment were more aggressive. Multiple specifications such as 75D/96F and 100D/96F rose by 100 yuan/ton, and 150D/96F even increased by 150 yuan/ton to 8,350 yuan/ton. As the raw material for texturing, POY price fluctuations often lead DTY. The fact that this round of POY increases has not yet been transmitted to DTY means that texturing mills are in a wait-and-see mode, reluctant to replenish inventories without clear end-order signals.
Signals from the regional industrial belt
As an important trading hub for polyester filament in Jiangsu and Zhejiang, the Wangjiangjing quotation system serves as a bellwether for the Yangtze River Delta weaving cluster. The current market shows that major producers such as Shenghong, Tongkun, and Xinfengming have largely aligned their FDY and POY quotations, indicating a consensus among industry leaders on cost-driven price hikes. However, the stability in the DTY segment also reflects that downstream texturing mills still have inventory pressure and limited willingness to accept higher-priced raw materials.
Behind the price divergence lies a divergence in operating rates across the weaving segment. Current data indicates that the comprehensive operating rate of water-jet looms around Shengze and Wangjiangjing remains around 70%, but order backlogs for differentiated products (such as fine-denier, stretch, and functional fabrics) are significantly better than for conventional varieties. This means that the next move in polyester filament prices will depend on whether end-use garment orders can see a substantive recovery after the traditional off-season in August.
Outlook: range-bound with a firm bias, but upside limited
In summary, the polyester filament market will maintain a narrow range-bound pattern in the short term, characterized by cost support and demand suppression. If polyester raw materials continue to firm, POY and fine-denier FDY still have room to rise by 50-100 yuan/ton; but DTY and coarse-denier FDY lack the momentum to follow up and may consolidate at current levels.
For buyers, it is not advisable to chase prices excessively at this point. A strategy of "procure as needed, in small batches and multiple lots" is recommended, with a focus on monitoring the start of end orders after mid-August.