In early August, the crude oil market once again experienced a dramatic plunge: Brent crude for October delivery fell as much as 7.3% in a single day, touching a low of $81.55 per barrel, while WTI dropped below the $80 mark. By conventional wisdom, such a violent swing in feedstock costs would trigger a chain reaction across the petrochemical and textile industries. However, this time, the performance of polyester filament surprised many industry insiders—prices only nudged down slightly, and some specifications remained unchanged. The traditional linkage between oil and polyester filament is being rewritten by new market forces.
Event Background
The immediate trigger for this oil price slump was a rapid shift in geopolitical sentiment. Earlier, there were signals that the US might consider striking Iranian energy facilities, which heightened market tensions; but soon after, negotiation intentions were signaled, with talks scheduled for the following day. This oscillating diplomatic posture kept oil markets in a state of high volatility, with daily swings exceeding 5% becoming the norm.
Notably, the geopolitical premium faded as quickly as it appeared, but the actual cost of oil transportation has been quietly rising. With increased risks in the Strait of Hormuz and the Bab el-Mandeb, even if some tankers can pass normally, insurance costs and rerouting expenses have increased significantly. These costs will eventually transmit to the refining and petrochemical sectors, influencing the pricing of naphtha, PX, and other chemical feedstocks.
Industrial Impact
The reason polyester filament can maintain a relatively independent trend lies in the blunting of the cost transmission chain. When upstream raw materials surged, polyester filament rose only modestly by 50-100 yuan per ton per day; when oil prices crashed, polyester filament declined only marginally. Behind this lies a change in supply-demand dynamics—the downstream weaving operation rate is currently below 50%, with most enterprises purchasing only for immediate needs. Small price fluctuations are insufficient to stimulate additional buying, while major swings in feedstock prices have failed to alter the inventory and profit balance of polyester filament itself.
A deeper change is the significant destocking of grey fabric inventories. Data shows that the average inventory at mills is now more than 10 days lower than the same period last year. This means that once downstream demand picks up, existing grey fabric inventories may not be enough to support the first wave of order surges. Markets often do not wait until inventories are exhausted to raise prices; instead, when signs of tightening emerge, some enterprises begin to hold back sales, thereby pushing prices up in advance.
Time is the most critical variable. The traditional off-season for textiles is expected to last for another half month, during which downstream demand is unlikely to improve significantly, and oil prices will remain highly volatile due to geopolitical factors. However, by late August, as demand seasonally recovers, the buyer's market pattern may begin to loosen. The decoupling of polyester filament from crude oil is actually building momentum for the next market move.