How the Oil Surge from Hormuz Strait Tensions Ripples Through the Textile Chain

On July 8, Brent crude surged 5% in a single day, with WTI up 4.75% and Brent briefly breaking $79 per barrel—the largest single-day move in recent months. The immediate trigger was the U.S. military announcing a series of strikes against Iran, while Iranian state media responded that any new attack would lead to the closure of the Strait of Hormuz. As the most upstream raw material for the textile chemical fiber chain, oil price volatility is now transmitting downstream along the PTA-polyester-filament-fabric pipeline.

Background

The day's oil price trajectory showed a phased acceleration: after an initial 0.3% gap-up in Asian morning, both benchmarks jumped 0.3% on the U.S. military action news; then through the afternoon and evening, they broke multiple resistance levels, with Brent climbing from around $75 to above $79, and the daily gain expanding from 1% to 5%. Notably, the three-month Brent futures spread widened to $2.36/barrel, the highest since June 16—the day after the U.S.-Iran peace memorandum was signed. A widening spread signals market pricing of short-term supply disruption risk.

The Strait of Hormuz is the world's most critical oil transit chokepoint, with about 17 million barrels per day passing through—roughly one-third of global seaborne oil trade. A closure would create an instantaneous supply gap, potentially sending prices sharply higher. Although President Trump did not reiterate terminating the interim agreement with Iran during the NATO summit, providing a brief pullback, the overall geopolitical risk remains elevated.

Industry Impact

For the textile sector, every $10/barrel rise in crude theoretically increases PX production costs by about $80-100/ton, lifting PTA costs by roughly 50-70 RMB/ton. With PTA processing margins already thin, higher oil prices directly squeeze PTA plant profits, forcing them to raise prices. Polyester filament—downstream of PTA—has a strong price linkage: historical data shows that for every 100 RMB/ton rise in PTA, POY, FDY, and DTY prices typically follow with gains of 50-80 RMB/ton.

For weaving and fabric mills, this means raw material procurement costs will climb significantly within one to two weeks. Currently, loom operating rates in the Jiangsu-Zhejiang region are around 70%, with grey fabric inventories at moderate levels. If polyester yarn prices continue to rise, mills face two choices: either absorb the cost increase and compress their own margins, or attempt to pass on higher prices to downstream apparel brands and traders. However, with global demand weak and brands aggressively squeezing prices, the latter option is difficult to execute.

On the export side, Chinese chemical fiber and fabric exports are priced in U.S. dollars. If oil-driven inflation coincides with RMB exchange rate fluctuations, export quotations could lose competitiveness. For textile exporters with signed orders but no locked-in raw material prices, the cost risk exposure is widening.

Practical Recommendations

For Buyers - Closely monitor crude and PTA futures; if Brent consistently holds above $78/barrel, consider locking in some polyester procurement orders early to avoid further price increases. - Negotiate short-term floating pricing mechanisms with suppliers to partially transfer raw material price volatility risk. - For non-urgent orders, consider deferring procurement decisions to see if geopolitical tensions ease.

For Exporters - For unhedged U.S. dollar orders, consider phased settlement to hedge against potential RMB depreciation, and explore forward exchange products from banks. - Include raw material price fluctuation clauses in export quotations, specifying the right to adjust prices or renegotiate if PTA or polyester yarn prices rise beyond a certain threshold. - Prioritize orders with higher profit margins, and consider deferring or requiring customers to share part of the raw material cost increase for low-margin orders.