Price trend

Last week (September 13-19, 2025), the polyester filament market showed an overall downward trend, with prices shifting downward and market sentiment leaning toward caution. According to the SunSirs commodity market analysis system, as of September 12, mainstream polyester filament mills in Jiangsu and Zhejiang provinces were quoting prices for POY (150D/48F) at 6,600-6,800 RMB/ton, polyester DTY (150D/48F low-stretch) at 7,900-8,150 RMB/ton, and polyester FDY (150D/96F) at 6,900-7,200 RMB/ton.

Analysis review

Cost support weakened, upstream raw materials remained weak: Despite fluctuations in international crude oil prices, their impact on polyester filament production costs was limited. More importantly, direct raw materials such as PTA (purified terephthalic acid) and MEG (ethylene glycol) had fluctuated and weakened. As of September 15th, polymerization costs had fallen to 5,400.30 RMB/ton, a 2.76% decrease from the beginning of the month, significantly weakening the cost support for polyester filament production.

Demand remained sluggish, with just-in-time inventory replenishment the main focus. Downstream weaving and texturing companies were showing little enthusiasm for purchasing, primarily focusing on using up previous inventory. Procurement was cautious, with only just-in-time inventory replenishment being maintained. The average production-sales ratio at polyester filament mills was only around 30%-40%, indicating a sluggish market.

Weak end-user orders: End-user demand for textiles and apparel was recovering slowly, and the outlook for overseas orders was also affected by uncertainty in China and US trade policies. Weaving mills' inventories of grey fabric were at a high level for the period, while profit margins were slim. This had severely constrained downstream manufacturers' ability and willingness to stock up on raw polyester filament.

Inventory pressure was rising, and factories were accumulating inventory: Due to continued sluggish production and sales, polyester filament factories were facing increasing inventory pressure. High inventory levels were suppressing prices. To alleviate inventory pressure, some companies were offering discounts and promotions, which further suppressed market prices. Operating rates remained high: Despite weak demand, the industry's operating rate remained at a relatively high 91.3%, putting significant supply pressure on the industry.

Market outlook

Polyester filament prices are expected to be volatile and weaker in the short term. Both polyester filament factories and downstream weaving companies were cautious and pessimistic about the market outlook. The market was generally concerned about further inventory accumulation during the National Day holiday, so as of September 19, destocking was the mainstream mentality.

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