At the beginning of the second half of 2025, the polyester market showed a trend of fluctuating price increases, primarily driven by cost support and seasonal demand recovery expectations.

Taking polyester staple fiber (1.4D*38mm) as an example, the average market price reached RMB 6,585 per ton on August 26, up 1.73% from August 20. For polyester filament, such as FDY150D/96F, the reference price on August 22 was around RMB 7,115 per ton, showing an increase compared to the beginning of the month. By August 25, the negotiated reference price for POY 75D/72F in the Jiangsu market was RMB 7,100-7,200 per ton, while FDY 75D/72F was RMB 7,200-7,300 per ton.

The rise in polyester prices was mainly influenced by the strengthening of upstream raw material PTA (purified terephthalic acid) prices. Due to plant maintenance shutdowns in East China’s PTA facilities, supply tightened, pushing spot prices higher. Meanwhile, fluctuations in international crude oil prices (e.g., the October contract settlement price for U.S. WTI crude futures was $64.80 per barrel on August 25) also provided cost support for polyester.

The traditional "Golden September and Silver October" textile season is a key factor driving optimism for second-half demand. Downstream loom operating rates have rebounded, and although overall sentiment remains cautious, seasonal expectations are bolstering market confidence.