On September 19, 2026, the DOP spot market trend was clearly downward. The current price is in the high range of the past year, with insufficient short-term upward momentum. Upstream raw materials, such as phthalic anhydride and 2-ethylhexanol, are also at high prices, and cost support still exists. However, the demand for PVC plasticizers in China is weak, and market quotations generally show a downward trend. It is necessary to continuously monitor the impact of changes in supply and demand on future market conditions.
I. Statistics of Mean Difference Changes
| Average Difference Type | Value as of September 19, 2026 | Value as of September 18, 2026 | Direction of Change |
|---|---|---|---|
| 5-day Average Difference (D5) | 13.33 | 48.33 | - |
| 10-day Average Difference (D10) | 120.01 | 134.17 | - |
| 20-day Average Difference (D20) | 320.83 | 325.84 | - |
II. Market Signal Identification
The current signal status is a clear downward signal, with the trend direction being downward. The judgment is based on the fact that the changes in the 5-day, 10-day, and 20-day average differences compared to the previous day are all negative, which aligns with the rules for determining a clear downward trend using the average difference method in China.
III. Price Levels and Reference for Upside and Downside Potential
The current DOP price is in the 5th tier (high range) of the nearly 1-year cycle, with limited upside potential and relatively high short-term downward pressure.
4. Price Trend Over the Past Year
V. Upstream and Downstream References
Upstream: Core raw materials such as phthalic anhydride and 2-ethylhexanol are currently at their highest prices in nearly 1 year, providing strong support to the cost of DOP.
Downstream: The demand side is mainly for PVC plasticizers. Recently, the mainstream DOP producers in China have generally reduced their quotations by 50-100 CNY/ton. Insufficient terminal demand is the main reason for the current price decline.
VI. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
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