On September 30, the port basis for ethylene glycol (EG) dropped significantly.

ChemPriceHub, September 30

On September 30, 2026, the spot contract basis quotations for port-based monoethylene glycol (MEG) at Chinese ports—specifically polyester-grade, imported, primarily ethylene-derived, with a minimum trading volume of 500 metric tons—declined significantly. The latest quotation ranges are as follows: (Basis = Spot Price – Front-month Futures Contract Price)

For the current week’s contracts (expiring before September 30), the overnight session basis quotation range is +450 to +500 yuan/ton, representing a drop of 700–900 yuan/ton from the upper end of last week’s basis levels.