This week (September 8th to September 12th, 2025), the polyester filament market as a whole showed a weak and volatile pattern, failing to usher in the prosperous market of the traditional “Golden September”. 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 6650-6850 yuan/ton, polyester DTY (150D/48F low elasticity) at 8000-8150 yuan/ton, and polyester FDY (150D/96F) at 6950-7200 yuan/ton.
Insufficient cost support: Despite some positive developments in the crude oil market (such as OPEC’s October production increase plan being lower than expected), PTA’s own supply pressure has increased due to the restart of some maintenance facilities. As of September 9th, the spot price of PTA is between 4600-4610 yuan/ton. The price of another raw material, ethylene glycol (MEG), also experienced a slight decline. The weakness of the raw material side makes polyester filament lack strong upward momentum in cost.
Weak demand performance: The recovery of demand during the traditional “Golden September and Silver October” peak season is relatively weak. Although the operating rate of downstream weaving enterprises has rebounded (the comprehensive operating rate of weaving machines in Jiangsu and Zhejiang regions is about 64%), it still decreased by 4.4 percentage points compared to the same period last year. The high inventory of raw fabric has resulted in no significant increase in the total number of new orders, and downstream users are adopting a cautious and wait-and-see attitude, with procurement mainly focused on small orders for essential needs. This makes the production and sales data of polyester filament continue to be weak, making it difficult to increase volume.
Supply pressure and inventory: Although mainstream production enterprises have cooperated to reduce production in the early stage to maintain the market, the inventory of polyester filament in polyester factories is gradually recovering. In order to seize market share, some manufacturers have a strong willingness to ship, and there is a phenomenon of negotiating discounts when actual transactions are made.
Market sentiment is sluggish: Against the backdrop of no substantial positive developments in costs, demand, and supply, there is a strong wait-and-see atmosphere in the market. The industry’s concern about the “long-term decline” has intensified.
It is expected that the price of polyester filament will remain weak and fluctuate in the short term. We need to pay attention to the changes in PTA raw material prices and further production and sales strategies of polyester filament enterprises. If there is a significant strengthening on the cost side or an improvement in downstream demand, it may provide a slight boost to the market.
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