Daily Review: Cost and Supply Support Push Polyester Bottle Film Market Higher

Market Overview: On April 28, 2026, polyester chip prices surged significantly. The average market price in East China stood at RMB 9,100 per ton, up RMB 250 per ton or 2.82% from the previous working day. Crude oil gains bolstered upstream raw material prices, providing strong cost support, while tight market supply further supported the rally. Most polyester chip producers raised their quotations by RMB 100–300 per ton, pushing the actual transaction prices higher. Downstream buyers remained cautious, purchasing only as needed and maintaining a wait-and-see attitude.

Supply side: The overall operating rate of polyester bottle chips is around 76.10%.

In the upstream market, international crude oil prices continued to rise during the day, providing strong cost support. The domestic PTA market in East China saw a significant increase, with prices around RMB 6,790 per ton; the ethylene glycol market remained firm, with spot prices in East China hovering around RMB 5,050 per ton.

Market Outlook: In the short term, U.S.-Iran negotiations remain highly uncertain, and the throughput of the Strait of Hormuz remains low, providing continued supply-side support. International oil prices are expected to trade with high volatility, sustaining cost support for polyester. Downstream purchasing at elevated price levels remains demand-driven, while tight market supply ensures solid bottom-line support. Consequently, the polyester bottle-grade chips market is expected to trade at high levels in the short term, with prices in the East China region fluctuating within the range of RMB 8,900–9,500 per ton.