PTA Operating Rate Falls Below 50%: How Long Can the Polyester Chain's Supply Contraction Logic Hold?

When the PTA operating rate fell below 50%, the market realized that this polyester chain rally was not a simple sentiment repair. Over the past week, ethylene glycol led gains due to depleted port inventories, while PTA became a new bull stronghold on the back of an operating rate at a decade low and social inventories at historical lows. However, processing fees remain high around 400 yuan per ton, suggesting that production cuts are not proactive. The quality of supply contraction determines the ceiling of this rally.

Event Background

The substantial impact of geopolitical conflicts on crude oil supply is the underlying driver of the collective rally in the polyester chain. Middle East crude loadings fell from 20 million barrels per day in early July to 12 million barrels per day at the end of July, with July production 8.3 million barrels per day lower than before the conflict. The Strait of Hormuz transit volume has only recovered to 10%-15% of pre-conflict levels. This physical supply gap has evolved from a 'risk premium' to sustained cost input. The catch-up rally in chemicals on Friday night was a concentrated correction to the earlier sluggish response to oil prices.

The low PTA operating rate is not the result of planned maintenance. Since late July, a 3.75 million-ton plant in Dalian has been shut down, a large East China facility has reduced output by 30%, and multiple units in the region have cut rates simultaneously. The direct causes point to force majeure events such as PX shortages and typhoon weather. This is fundamentally different from the proactive maintenance in the 2022-2024 capacity expansion cycle, when PX supply was ample and downstream demand was resilient. Now, processing fees are at historically high levels, and producers have no intention to cut output voluntarily. Passive production cuts imply greater supply elasticity.

Industry Impact

For polyester plants, the supply contraction in PTA directly raises raw material procurement costs. Ethylene glycol has already surged due to depleted port inventories. If PTA continues to rise, intermediates such as polyester chips and polyester filament will face cost transmission pressure. However, downstream weaving orders have not yet expanded, and the acceptance of high-priced raw materials is limited, potentially exacerbating profit distribution imbalances across the chain.

For PTA producers, current processing fees offer substantial profit margins, but low operating rates are unsustainable. The market expects a concentrated resumption window in mid-to-late August, which will gradually ease supply pressure. If geopolitical tensions suddenly ease, cost-side support could collapse instantly—a risk repeatedly verified in recent months. Therefore, the sustainability of the PTA rally depends not on supply but on whether demand can deliver above-expectation orders during the 'golden September and silver October' peak season.

Practical Advice

For Buyers - Monitor the pace of PTA plant restarts in mid-to-late August; if concentrated restarts occur, consider slowing procurement to await price pullbacks. - Closely track downstream weaving orders; if peak-season orders exceed expectations, lock in polyester raw material contracts early to hedge against cost increases. - Use futures instruments to hedge against raw material price fluctuations, especially when processing fees are high and supply recovery expectations are clear.

For Foreign Trade Enterprises - Export quotations should reserve room for raw material price fluctuations; given the rising volatility in the polyester chain, adopt short-term price locking or floating quotation mechanisms. - Monitor the navigation situation in the Strait of Hormuz; if geopolitical tensions persist, international logistics costs may rise further, affecting delivery schedules. - Diversify procurement channels to avoid over-reliance on a single PTA supplier, mitigating supply uncertainties from plant maintenance.