On July 9, international crude oil futures experienced a sharp single-day sell-off, with WTI briefly plunging 4% during the session before closing at $72.08 per barrel, while Brent crude settled at $76.30 per barrel. For the textile industry, this is far from a mere energy headline—crude oil is the starting point of the polyester chain, and every $1 move in oil prices cascades down through PTA, MEG, polyester filament yarn, and polyester staple fiber with amplified effect.
Cost Transmission: Time Lag and Elasticity from Crude to Fiber
In the polyester feedstock chain, both PTA and MEG are derived from naphtha or directly from crude oil. Industry data indicates that a 10% change in crude prices theoretically shifts PTA costs by 6%-8%, and subsequently polyester filament yarn costs by 4%-5%. However, the actual transmission takes 2-3 weeks, and the elasticity coefficient is influenced by intermediate inventory levels and operating rates. The July 9 decline, if sustained, implies that polyester feedstock procurement costs could soften notably by early August.
Notably, this drop is not an isolated event. Over the prior week, WTI had already weakened from near $78, and the July 9 session featured multiple intraday sharp sell-offs, indicating concentrated selling pressure. Brent crude accelerated its decline after breaking below $78, ultimately closing at $76.30 with an intraday range exceeding $3. Such high volatility forces polyester mills relying on long-term contracts to rapidly reassess inventory values.
Industrial Impact: Profit Redistribution in the Polyester Chain
The polyester chain is currently at the transition between the traditional slow season and the upcoming peak season. July is typically a slow month for weaving, with weak end-demand and rising inventory pressure at polyester plants. A sudden drop in crude feedstock costs would temporarily expand processing margins for PTA and polyester yarn—but only if downstream buying appetite emerges simultaneously. If weaving mills choose to wait and see, polyester plants face a triple squeeze: falling costs, falling selling prices, and rising inventories.
Feedback from industrial clusters in Shaoxing, Xiaoshan, and Shengze indicates that polyester yarn traders began adjusting pricing strategies on the evening of July 9. Some mills temporarily suspended releasing factory-gate prices, waiting for the night-session settlement to stabilize before quoting. This 'price pause' is itself a signal—the market is highly sensitive to cost uncertainty, and both buyers and sellers are reassessing short-term price floors.
Export Order Pricing: The Dual Game of Exchange Rates and Raw Materials
For export orders dominated by polyester fabrics, the cost benefit from lower crude may be partially offset by exchange rate fluctuations. The renminbi has seen increased two-way volatility this year, while export orders are typically priced in USD but settled in RMB, with a 30-60 day pricing cycle. The July 9 crude crash coincided with a strengthening dollar, meaning that the RMB-denominated export prices may not fall in lockstep with raw material costs.
Exporters should be wary: if oil prices remain low, overseas buyers may demand price renegotiations, especially for forward orders already locked but not yet produced. Conversely, if oil rebounds within days—as seen in the late session on July 9—the cost uncertainty actually complicates price negotiations.