As of September 14, 2026, the spot price of the plasticizer DOP in China has continued to rise for several days. The prices of upstream raw materials, such as 2-ethylhexanol and phthalic anhydride, have also increased, providing strong cost support. Indicators show that the current DOP price is in a clear upward trend, but the price is already at a high level for the past year, and the room for further increases is relatively limited.
I. Table of Mean Difference Changes
| Mean Difference Indicator | Today's Value (2026.09.14) | Yesterday's Value (2026.09.13) | Direction of Change |
|---|---|---|---|
| 5-day Mean Difference D5 | 78.34 | 58.33 | + |
| 10-day Mean Difference D10 | 210.83 | 206.67 | + |
| 20-day Mean Difference D20 | 257.92 | 243.75 | + |
II. Signal State Determination
The current three mean differences have all increased compared to the previous day, meeting the clear upward signal criteria of the mean difference method in China.
III. Trend Direction Conclusions
The current DOP price trend is clearly upward. Reason for this determination:
The 5-day, 10-day, and 20-day moving averages all showed the same direction of change as the previous day, and all were positive, meeting the clear upward-trend criteria stipulated by the moving-average difference method.
In the past week, prices quoted by major Chinese DOP producers have been continuously raised, and the actual transaction prices for spot goods have also increased accordingly.
The prices of upstream raw materials, such as 2-ethylhexanol and phthalic anhydride, have risen simultaneously, providing strong support on the cost side.
4. Spatial Reference
The prices for the 60-day, 3-month, and 1-year cycles are all in the 5th percentile (high range), meaning they are in the top 20% of their respective one-year highs, with relatively limited room for further increases.
V. Trend Chart Display
VI. Data Explanation
The latest available data is up to September 14, 2026. It is recommended to refer to real-time data.
VII. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
(Source: )