A geopolitical-driven oil price collapse has not brought the expected cost relief to the polyester chain. Instead, upstream raw materials, midstream filament, and downstream weaving are locked in a fierce battle over volume, price, and margin. Industry data shows that after the US-Iran peace deal and the reopening of the Strait of Hormuz, international oil prices have fallen back to pre-war levels, but polyester filament prices remain sticky, with processing margins staying high, while downstream weavers refuse to restock at inverted costs.
Filament Cuts: The Hard Logic of Margin Defense
The core strategy of filament producers is to limit output to protect profits. Industry data indicate that in past years, whenever raw material prices dropped, filament followed with promotions, squeezing processing margins to near break-even levels, turning producers into mere "porters" for upstream. Now, they choose to run at about 70% capacity to secure processing margins of over 500 yuan per ton, compared to just around 100 yuan per ton under full production. This "less volume, more profit" calculation is essentially a reversal of past price war lessons.
But this strategy directly chokes both upstream and downstream—upstream PTA demand remains weak due to low filament runs, increasing inventory pressure, while downstream weavers cannot obtain reasonable raw material costs and face widespread losses on spot orders. Filament producers are not unaware of the deadlock's cost but fear that once they discount, downstream will fall into a "if it can drop today, it might drop tomorrow" waiting game, undermining all previous cut efforts.
Weaving Sector: Waiting for a "Price Catch-Up" Window
For downstream weavers, the core demand is for filament prices to "catch down" to a reasonable range. Before the oil price crash, weavers had long suffered from a situation where "flour is more expensive than bread"—upstream filament was high, but orders for texturing and weaving could not raise prices. Now that raw material costs have collapsed, filament still maintains high margins, so downstream naturally refuses to be the bag holder.
Industry data show that weavers are mainly consuming existing inventories, with very low willingness to place new orders. They judge that unless filament takes the initiative to cut prices, the price competitiveness of end orders cannot recover. In other words, the weaving side is using "non-buying" to force filament to cut prices, and the outcome of this game depends on how much inventory pressure filament can bear. Once filament inventories break through warning levels, the output-cut alliance may weaken.
PTA's Anxiety: When Will the Demand Gap Be Filled?
The situation for upstream PTA is equally delicate. Industry data show that in July, maintenance of PX and PTA units intensified, further reducing operating rates, but the bigger concern is the return of supply in the medium term—after shipping through the Strait resumes and refinery maintenance ends, raw material shortages will gradually ease from August onward. By then, if polyester runs do not pick up, PTA's destocking process will face severe challenges.
The core desire of PTA producers is for filament to increase runs. Only when filament sales volume picks up can direct PTA demand recover. The most effective lever to boost filament runs is promotional discounting. But filament producers are clearly unwilling to give in easily, leaving upstream destocking stuck. In the short term, PTA inventory pressure may accumulate further, weighing on forward prices.
Where the Game Is Heading: Who Blinks First?
The current deadlock in the polyester chain fundamentally stems from a mismatch in perceptions of "reasonable profit." Filament sees output-cut margin protection as a long-term strategy; downstream believes costs have collapsed and prices should follow; upstream wants filament to raise runs to absorb inventory. From industry data, weavers' inventory digestion capacity is limited. If filament insists on not cutting prices, end orders may remain weak, eventually hurting filament's own sales.
On the other hand, the filament output-cut alliance is not monolithic. If some producers break ranks due to inventory pressure and start discounting, it could trigger a chain reaction, leading to rapid price declines. For buyers, the key is to monitor filament operating rates and inventory data. Once a turning point appears, it will be a window to stock up.