Diethylene Glycol Price Trend This Week: Supply, Demand and Price Drivers | DEG Diethylene Glycol Supplier
发布于 2026-10-19
**Diethylene Glycol Price Trend This Week: Supply, Demand and Price Drivers**
This week, the diethylene glycol (DEG, CAS 111-46-6) market exhibited a clear pattern of cost-push and supply contraction reinforcing each other. As of Friday this week, mainstream spot quotes in East China closed at RMB 4,360/ton, up RMB 180/ton from RMB 4,180/ton last Friday, a weekly gain of 4.31%; the South China market closed at RMB 4,420/ton, up 4.00% for the week. The main futures contract strengthened in tandem, touching a weekly high of RMB 4,415/ton. In terms of trading structure, volume this week was concentrated mainly in the first two trading days mid-week, while trading in the high-price range slowed in the latter half of the week, with downstream buyers showing some resistance to the rapid run-up. For companies currently executing quarterly procurement plans, understanding the drivers behind this rally is more critical than simply tracking quotes.
Cost Side: Strong Upstream Ethylene Transmission Compresses DEG Processing Margins
The primary driver of this week's DEG price increase came from the cost side. Northeast Asia ethylene CFR quotes rose USD 35/ton during the week to USD 915/ton, translating to a fully-loaded DEG processing cost of approximately RMB 4,520/ton. Current spot prices are already near the cost line, and the theoretical margin for some non-integrated plants purchasing ethylene externally has turned slightly negative. This explains why producers' willingness to hold prices firm has strengthened noticeably this week—under loss pressure, room for concessions is extremely limited.
Looking at the historical patterns in [DEG price trend](https://www.topdeg.com/en/blog.html) analysis, when DEG prices approach marginal cost, resistance to further declines increases significantly, and once sustained upward pressure emerges on the cost side, spot prices tend to follow quickly. This week is a typical manifestation of this mechanism. Notably, adjustments to the co-production ratio of monoethylene glycol (MEG) and DEG are also affecting effective DEG supply—some plants are suppressing DEG output to maximize MEG economics, further tightening the available spot circulation of DEG.
Supply Side: Operating Loads Decline, Social Inventories Fall to Low Levels
Supply contraction is the second pillar supporting this week's market. According to industry tracking data, the comprehensive operating load of major domestic DEG plants fell to 68.5% this week, down 3.2 percentage points from last week, mainly due to temporary load reductions at two plants in East China and a product switch at one plant. Weekly output was approximately 28,500 tons, a month-on-month decrease of about 1,400 tons.
On inventories, DEG stocks at major East China ports fell to 42,000 tons this week, down 6,000 tons from last week, a decline of 12.5%, marking a three-month low; plant inventories also declined to 21,000 tons. Low inventories combined with falling operating rates have heightened holders' reluctance to sell, with some traders suspending quotations mid-week. For buyers relying on a stable [diethylene glycol supplier](https://www.topdeg.com/en/) for supply, the current juncture requires greater attention to contract fulfillment certainty rather than pure price comparison.
Demand presents a mixed picture: the unsaturated resin sector maintained an operating rate of around 52%, with steady rigid demand procurement of DEG; the [diethylene glycol coolant](https://www.topdeg.com/en/blog.html) raw material segment is entering the tail end of seasonal stocking, with procurement pace slowing somewhat; while the [DEG for unsaturated resin](https://www.topdeg.com/en/blog.html) direction—benefiting from a recovery in downstream slurry export orders—saw inquiry activity increase by approximately 15% this week. Overall, demand has not shown explosive growth; this rally is primarily driven by the supply and cost sides.
Interpretation of Price Increase Factors: Triple Logic Overlay, Short-Term Strength Likely to Persist
In summary, this week's price increase factors can be attributed to a triple overlay of logic. First, cost-push is rigid—under strong ethylene, DEG plant losses are widening, giving producers ample confidence to hold prices firm. Second, supply contraction is sudden—plant load reductions and product switches occurred simultaneously, making rapid recovery difficult in the short term. Third, low inventories have amplified price elasticity—any marginal buying can push quotes higher.
Judging from intraday fluctuations in [DEG price per ton](https://www.topdeg.com/en/product.html), the frequency of quote adjustments accelerated noticeably this week, with some trading days seeing second-round revisions, reflecting strong market sentiment. However, it is worth noting that trading in the high-price range has already shown signs of slowing. If the cost-side rally moderates next week, the room for DEG to push further higher may narrow, with a shift to high-level consolidation becoming more likely.
Procurement Recommendations: Lock Volume in Batches, Focus on Fulfillment and Logistics Support
Given the current market environment, three recommendations for buyers. First, rigid-demand users may adopt a batch-locking strategy, building positions for the next 4–6 weeks of consumption in the RMB 4,300–4,380/ton range in batches, avoiding one-time chasing of highs. Second, carefully verify suppliers' plant operating status and inventory positions, prioritizing first-hand [DEG supplier](https://www.topdeg.com/en/) sources with stable contracted cargoes to reduce supply disruption risk. Third, pay attention to logistics support capabilities—shipping from East China ports is currently tight, and suppliers with [DEG drum/IBC shipping](https://www.topdeg.com/en/product.html) capabilities offer greater assurance on delivery timelines. For companies establishing cooperation for the first time or needing to understand [how to procure diethylene glycol](https://www.topdeg.com/en/about.html), it is advisable to confirm quality inspection reports, hazardous chemicals qualifications, and transportation plans in advance to avoid delivery delays due to qualification issues.
Conclusion
This week, diethylene glycol prices rose 4.31% amid the triple resonance of cost-push, supply contraction, and low inventories, with East China spot closing at RMB 4,360/ton. In the short term, cost rigidity and low operating rates will continue to support firm price performance, but slowing trading in the high-price range suggests the upward slope may flatten. On the procurement side, buyers should maintain a rational pace—locking volume in batches, prioritizing stable supply sources, and closely tracking ethylene trends and plant restart dynamics to control procurement costs and supply risks amid volatility.
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