At 7,500 yuan per ton, the Jiangsu polyester staple fiber spot price recorded a single-day drop of 170 yuan on July 27—the largest daily decline in three months. This plunge has cracked open a fissure between cost and demand across the polyester supply chain.
The Geopolitical Premium Fades
The direct trigger came from upstream. International crude oil prices fell sharply after the US-Iran mutual strike suspension was confirmed, rapidly squeezing out the 'safe-haven premium' built up during geopolitical tensions. For polyester staple fiber, PTA and MEG are its core raw materials, and crude is the cost anchor for PTA. Once crude weakened, the cost support for the entire polyester chain collapsed like dominoes.
Industry data shows that between July 26 and 27, spot PX and PTA prices both followed the decline, falling 1.5%-2%. The polyester staple fiber drop of about 2.2% slightly exceeded that of its raw materials, indicating that the market was not only digesting lower costs but also pricing in a bearish outlook.
Regional Spot Market Fractures
Jiangsu, one of China's main polyester staple fiber production bases, sets the benchmark for East China. However, the price adjustment was uneven. On July 27, mainstream negotiation ranges in Jiangsu stood at 7,450-7,600 yuan/ton, with low-end quotes as low as 7,350 yuan/ton. This price gap reveals a key signal: inventory pressure divergence among holders is intensifying.
Some traders are actively cutting prices to offload inventory and gain liquidity, while larger mills with decent order backlogs are holding firm around 7,600 yuan/ton. This tug-of-war suggests the market has not yet bottomed, and buyers can expect lower entry points.
Downstream Buyers Go on Strike
Key downstream sectors for polyester staple fiber include cotton spinning, nonwovens, and filling materials. Amid the sharp price drop, buyers are shifting from 'hand-to-mouth' procurement to a full-blown wait-and-see stance.
This is not because end demand has vanished, but because buyers are waiting for a new price anchor. When daily declines exceed 2%, any purchase made a day earlier means a book loss. As a result, spot market volumes will shrink significantly in the short term, creating a negative feedback loop: falling prices lead to waiting, which in turn pressures holders to destock at even lower prices.
For foreign trade firms, the rapid fluctuation in renminbi-denominated prices complicates pricing for forward orders. Some export contracts to Europe have faced execution disputes as the price benchmark shifted sharply during negotiations.