This week (September 13-19, 2025), the polyester filament market as a whole showed a weak downward trend, with a shift in price focus and a cautious market sentiment. According to the Commodity Market Analysis System of Shengyi Society, as of September 12th, the mainstream polyester filament factories in Jiangsu and Zhejiang Province quoted POY (150D/48F) at 6600-6800 yuan/ton, polyester DTY (150D/48F low elasticity) at 7900-8150 yuan/ton, and polyester FDY (150D/96F) at 6900-7200 yuan/ton.
Weakened cost support and weak upstream raw materials: Although international crude oil prices have fluctuated, the transmission support for polyester filament costs is limited. More importantly, the trends of direct raw materials such as PTA (purified terephthalic acid) and MEG (ethylene glycol) have fluctuated weakly. As of September 15th, the cost of polymerization has dropped to 5400.30 yuan/ton, a decrease of 2.76% from the beginning of the month, significantly weakening the cost support for polyester filament.
The demand continues to be sluggish, and the main trend is to replenish inventory for essential needs. Downstream weaving and reloading enterprises have low purchasing enthusiasm, mainly relying on the consumption of previous inventory, and their purchasing behavior is very cautious, only maintaining inventory for essential needs. The average production and sales rate of polyester filament factories is only at a low level of 30-40%, indicating a sluggish market transaction volume.
Poor terminal orders: The recovery of terminal textile and clothing demand is slow, and the prospects for overseas orders are also affected by the uncertainty of Sino US trade policies. The raw fabric inventory of the weaving factory is at a high level during the same period, while the profit margin is narrow, which seriously restricts the downstream’s stocking capacity and willingness for raw material polyester filament.
Inventory pressure is rising and factory inventory is accumulating: Due to the continued light production and sales, the inventory pressure of polyester filament factories is constantly increasing. High inventory suppresses prices. In order to alleviate inventory pressure, some companies will choose to offer discounts and promotions, which further suppresses market prices. The operating rate remains high: Despite poor demand, the industry’s operating rate remains relatively high at 91.3%, indicating significant supply pressure.
It is expected that the price of polyester filament will remain weak and fluctuate in the short term, and both polyester filament factories and downstream weaving enterprises are cautious and pessimistic about the future prospects. The market is generally concerned that the National Day holiday will further accumulate inventory, so destocking and shipping is currently the mainstream mentality.
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