International oil prices staged a classic roller-coaster session on August 7, with Brent briefly falling below $81 per barrel and WTI dipping to $75.82, both down over 2% intraday. Yet by the close, NYMEX light crude rose 89 cents to $78.18, while Brent gained $1.06 to $83.55. This pattern of deep intraday losses followed by a rebound may seem like mere trading sentiment, but for the textile chemical fiber chain, it represents a rapid reset of cost expectations.
Event Background
The immediate trigger for the day's volatility was a U.S. official's statement that talks between Oman and Iran over the Strait of Hormuz had made progress, with a deal expected soon. This geopolitical signal initially led the market to believe supply disruption risks had eased, causing a sharp selloff. However, doubts about the deal's implementation, coupled with short covering, quickly lifted prices in the final hours. Notably, the gap between the intraday low and the closing price approached 3%, a level of intraday volatility rarely seen in recent oil markets.
For the polyester chain, crude oil is the core cost driver for PTA and MEG. Each $1 per barrel move in oil translates roughly to a $30-40 per ton change in PTA costs and $20-30 per ton for MEG. Therefore, when Brent fell from above $83 to near $81 and then rebounded within hours, spot quotes for polyester raw materials inevitably followed. In fact, during the session, some polyester plants suspended quotations, adopting a wait-and-see stance, while traders probed lower bids.
Industry Impact
The short-term oil volatility affects the textile industry not through simple linear cost transmission but through amplified expectation management. First, polyester plants' raw material purchasing rhythm is significantly disrupted: when oil plunges, they tend to delay PTA and MEG procurement to wait for lower costs; when oil rebounds, they may rush to restock, causing demand pulses. This 'buy on rising, not falling' psychology was already visible in the polyester filament and staple fiber markets in early August, with some plants moderately stocking up at low oil prices but overall inventories remaining at medium levels.
Second, for downstream weaving enterprises, oil fluctuations directly impact fabric pricing stability. In clusters like Shengze and Changxing, polyester filament accounts for over 70% of raw material costs; every 5% change in oil can shift fabric costs by 2%-3%. With demand not yet clearly recovering, volatile raw material prices make weavers cautious in order-taking, with some shortening quote validity to just three days to hedge cost risks.
More importantly, progress in Hormuz talks may signal a shift in medium-term supply. If a deal is reached, increased Iranian oil exports would ease global supply, suppressing the oil price center, a medium-to-long-term positive for downstream textile firms. But uncertainty persists; if talks collapse, oil could spike, bringing renewed cost pressure to the polyester chain. Therefore, textile companies cannot decide based on a single day's movement but should monitor the evolution of geopolitical events.