HomeIndustry InsightsCrude Oil Prices Retreat, While Cost Pass-Through Across the Polyester Chain Remains Limited

Crude Oil Prices Retreat, While Cost Pass-Through Across the Polyester Chain Remains Limited

2026-08-07

Recent volatility in the international crude oil market has drawn increasing attention across the polyester value chain. Although crude oil prices have retreated from recent highs, the impact on downstream polyester products, including polyethylene terephthalate (PET) resin, has been relatively limited, reflecting the resilience of the polyester market amid changing cost conditions.

From late July to early August, crude oil prices experienced a sharp correction followed by a moderate rebound. On July 31, Brent crude oil averaged USD 90.12/barrel, remaining at a relatively elevated level. However, as expectations of easing geopolitical tensions strengthened, risk premiums gradually declined, while renewed supply growth expectations also weighed on market sentiment. As a result, Brent crude oil fell to USD 79.36/barrel on August 4, down USD 10.76/barrel from July 31. Although prices recovered to USD 82.49/barrel on August 6, they remained USD 7.63/barrel lower than the July 31 level, representing a decline of approximately 8.5%.

In contrast, downstream polyester products showed a relatively moderate adjustment compared with the crude oil market. During the same period, bottle grade PET resin prices declined by approximately 2.5%, significantly less than the decline in Brent crude oil prices. The divergence between crude oil and PET price movements indicates that lower upstream costs have not been fully transmitted to the PET resin market, as supply-demand fundamentals and processing margins across the polyester chain have provided support.

The limited cost pass-through is mainly attributed to the internal dynamics of the polyester value chain. Crude oil fluctuations are generally transmitted through PX, PTA and MEG before reaching polyester products. However, during this period, PTA and MEG markets maintained relatively strong support due to tighter supply conditions, ongoing inventory reduction and stable processing margins. These factors reduced the extent to which lower crude oil prices were transferred downstream.

Meanwhile, amid continued geopolitical uncertainties and fluctuating market expectations, polyester producers remained cautious about whether crude oil had entered a sustained downward cycle. As a result, both the timing and magnitude of price adjustments across the polyester chain lagged behind movements in the crude oil market.

At the downstream polyester stage, producers have adjusted operating rates and maintained supply discipline to protect processing margins. These supply-side measures further absorbed part of the cost pressure and limited the decline in finished polyester product prices.

Overall, the polyester value chain has demonstrated a pattern of “declining crude oil prices with relatively limited adjustment in PET resin prices.” While crude oil prices have moved lower from late-July highs, supportive fundamentals in PTA and MEG, combined with supply management across the polyester industry, have provided stability to the polyethylene terephthalate (PET) resin market.

Looking ahead, market participants will continue to monitor developments in crude oil prices, polyester raw material fundamentals and downstream demand recovery. Given the ongoing uncertainty in global energy markets and the polyester supply-demand balance, PET resin prices are expected to remain within a relatively stable range in the near term.