The overall focus of ethylene glycol prices shifted upward in August. According to data from Shengyi Society, as of August 31st, the average price of domestic oil to ethylene glycol was 4496.67 yuan/ton, an increase of 1.39% from the average price of 4435 yuan/ton on August 1st.

In terms of port ethylene glycol, the average spot contract price of port ethylene glycol was around 4533 yuan/ton on August 29, 2025. This week’s spot contract basis range is+56 to+58 yuan/ton. As of the close, next week’s contract basis range is+67 to+69 yuan/ton, and in late September, the contract basis range is+70 to+72 yuan/ton.
The spot price of domestic coal to polyester grade ethylene glycol (loose water, tax included, self pickup) per unit is 4050-4100 yuan/ton.
In terms of external ethylene glycol, recent ship cargo negotiations have resulted in transactions around 531-534 US dollars per ton.
September ethylene glycol price or range fluctuated sideways
The price or range of ethylene glycol fluctuated horizontally in September for the following reasons:
Overseas supply losses are significant, and the import volume may decrease from September to October; The arrival volume in early September is relatively low, and it is expected that the explicit inventory will drop below 450000 tons at the beginning of next week.
The domestic supply load has reached a high level, and attention should be paid to the restart of some facilities for new supply. The new facilities in Sichuan have been included in the production capacity base, and the production capacity base has been adjusted to 29.175 million tons. The total production capacity of synthesis gas to ethylene glycol is 10.96 million tons.
Downstream market situation: At the end of the month, the polyester load rebounded, and the processing gap of downstream products mostly widened, but some product prices fell. The inventory index of various polyester products has increased, indicating an increase in inventory pressure. The market expects the average polyester load to reach 91.5% in September, with improved demand support.
Overall, it is expected that the supply and demand of ethylene glycol will shift towards a tight balance in September.