Morning Market Update for Diethylene Glycol (DEG) (September 17, 2026)

I. Key Focus Points

1. Multiple efforts to ease tensions in the Middle East, combined with the Federal Reserve's interest rate hikes strengthening the US dollar, led to a decline in international crude oil prices.
2. This week, the average operating rate of domestic unsaturated polyester resin (UPR) plants was 32.5%, unchanged from the previous period.
3. On September 15, total shipments from two tank farms in Zhangjiagang amounted to 500 tons, an increase of 168 tons compared to the previous day. As of now, inventory at Yangtze International and Fubao tank farms stands at 3,300 tons.

Core Logic: Tensions between the US and Iran keep international crude oil prices elevated; however, diethylene glycol (DEG) faces weak demand despite increased supply, resulting in a persistent downward market trend.

II. Price Table

III. Market Outlook

Chempricehub reported on September 17: With the situation regarding US-Iran relations remaining unclear, international crude oil prices stay high, driving up commodity prices generally. However, DEG has entered a downward channel due to expected increases in supply, with the decline widening. The market has currently hit new lows, and short-term trends are expected to remain weak.