China Diethylene Glycol (DEG) Market Update Sep 2026: Ample Supply Drags Spot Prices Lower

In early September 2026, China’s diethylene glycol (DEG) market corrected lower on sufficient domestic supply and cautious downstream demand. Diethylene Glycol (DEG, CAS:111‑46‑6) is a by‑product generated from ethylene glycol production, widely applied in unsaturated polyester resin (UPR), antifreeze, coating solvents, polyurethane, cement grinding aids and multiple industrial sectors. As a critical co‑produced chemical intermediate, its market trend is closely tied to ethylene glycol operating rates, import arrivals and downstream manufacturing purchasing sentiment.

Supply Side: Ample Domestic Output together with Gradual Import Cargo Inflow

Major domestic producers including Hengli, Satellite Chemical, Hengyi, Zhongke, Yulong and Zhenhai Refining keep ethylene glycol plants running at medium‑high load, generating steady DEG output across domestic facilities. Since DEG is co‑produced during ethylene glycol manufacturing, higher EG operating rates will naturally bring increased DEG by‑product volume.

Meanwhile, imported DEG cargoes originating from the Middle East arrive at Chinese ports in batches, leading to mild inventory accumulation at major port warehouses. The rising available spot stock forms persistent pressure on domestic DEG spot prices and restrains sharp price rebounds in the short run.

Demand Side: Weak End‑User Buying with Limited Seasonal Antifreeze Support

UPR represents the largest consuming sector for DEG, accounting for nearly 50 percent of total domestic consumption. At present, the overall operating rate of the UPR industry stays at a moderate level. End‑manufacturers remain resistant to high raw‑material costs and stick to low‑inventory, on‑demand procurement strategies instead of aggressive stock building.

Antifreeze purchasing activities in North China will kick off starting September, bringing partial seasonal demand support for DEG consumption. Nevertheless, the overall demand boost from antifreeze sector remains limited. Demand from coating and polyurethane industries maintains stable performance. Affected by the previous round of high market prices, overseas purchasers took a wait‑and‑see attitude, which has resulted in reduced export orders for Chinese DEG suppliers.

Market Outlook: Weak‑Volatile Trend Expected in Near‑Term Market

Looking ahead, China DEG market is featured by sufficient supply and sluggish downstream demand, and spot prices are projected to fluctuate under downward pressure. A sharp price rebound is less likely to take place in absence of large‑scale ethylene glycol plant maintenance or substantial crude oil price surges.

Market participants need to keep close track of several core variables, including EG unit shutdown schedules, seasonal antifreeze procurement progress, and monthly port import arrival volumes, which will drive DEG spot movements in the coming weeks.

Product Supply Information

We supply high‑qualitypolyester‑grade DEG with minimum 99.9% purity, and Certificate of Analysis (COA) is available upon request. Multiple packing solutions are optional, including drums and IBC tanks. Both domestic distribution and full‑set export services can be provided for global partners. Welcome to send your inquiries for further cooperation.

Disclaimer: The above market summary is for reference only, which shall not be regarded as formal sales quotation or investment advice. Actual transaction price needs final confirmation with our sales team.