The international crude oil market experienced dramatic fluctuations within a matter of hours. Brent crude broke through the $85/barrel mark on the evening of July 16 Beijing time, up 0.40% on the day. Earlier the same day, WTI crude had fallen back to $78.92/barrel, down 1.00%. This intraday whipsaw reflects growing divergence in market views on supply and demand. For the textile industry, crude oil prices are never just a macroeconomic number—they directly determine the raw material costs of the polyester chain, thereby affecting pricing at every level from yarn to fabric.
Cost Transmission Lag and Amplification Effects
Crude oil is the source of the chemical fiber industry. Brent crude breaking through $85/barrel means the cost center of intermediate products such as naphtha and PX will shift upward. According to industry practice, for every $1/barrel increase in crude oil, the production cost of PTA increases by about 35-40 yuan/ton. PTA, as the core raw material for polyester filament and staple fiber, its price fluctuations will be transmitted to downstream polyester fabric quotes within 2 to 4 weeks.
The current textile market is in a transition window from the traditional off-season to the peak season. Downstream weaving companies generally maintain low inventory strategies. A sudden spike in crude oil prices could disrupt the originally stable raw material procurement rhythm. If prices remain high, polyester factories will likely pass on cost pressure by raising ex-factory prices. For fabric traders who have already signed fixed-price orders, this means profit margins will be directly compressed.
Notably, WTI crude fell to $78.92/barrel earlier in the day, widening the spread with Brent crude to over $6/barrel at one point. This cross-market spread expansion often signals regional energy supply-demand imbalances, which may further disrupt the trade flow of global chemical raw materials—for example, adjustments in the export direction of US light hydrocarbon feedstocks like ethane and propane, ultimately affecting the raw material supply structure of China's polyester industry.
Differentiated Reactions Across the Chain
The sensitivity of the chemical fiber chain to crude oil price fluctuations is not uniform. Upstream PTA and MEG plants are most sensitive, as direct raw material costs account for over 70%; midstream polyester factories face the dual squeeze of rising raw material costs and downstream price pressure; downstream weaving and dyeing companies usually have a 1-2 month order buffer, so the short-term cost impact is relatively controllable, but if crude oil prices remain above $85/barrel for more than two weeks, pressure will begin to transmit to the end.
From a regional perspective, areas with concentrated polyester capacity such as Xiaoshan and Shaoxing in Zhejiang, as well as weaving clusters like Shengze in Jiangsu and Changle in Fujian, will feel the cost changes first. Companies in these areas typically use a cost-plus pricing model, and every jump in raw material prices will be reflected in the day's ex-factory price list within three days. In Keqiao's light textile city, spot fabric quotes will lag by 1-2 weeks due to intermediate inventory buffers.