Today's monitoring of the Chinese DOP spot market continues the recent upward trend. The average difference method shows that the current price is in a clear upward trend channel. However, the 1-year cycle price is already in a high range, with relatively limited room for further increases. The concurrent rise in upstream prices of 2-ethylhexanol and phthalic anhydride provides strong support to the cost side. Downstream rigid demand procurement for PVC plasticizers is following suit, and in the short term, the market still has cost-side support.
The latest available DOP-related data is up to September 10, 2026. It is recommended to refer to real-time data.
I. Table of Mean Difference Changes
| Average Difference Type | Value as of Sep 10, 2026 (CNY/ton) | Value as of Sep 9, 2026 (CNY/ton) | Direction of Change |
|---|---|---|---|
| 5-day Average Difference D5 | 268.33 | 183.33 | + |
| 10-day Average Difference D10 | 121.67 | 100 | + |
| 20-day Average Difference D20 | 198.33 | 174.59 | + |
II. Signal State Determination
The current signal is a clear upward signal.
III. Trend Direction Conclusions
The current DOP price trend is clearly increasing, with the rationale being: the change direction of the 5-day, 10-day, and 20-day average differences compared to the previous day is completely consistent (all positive increases), and all three types of average difference values are positive, meeting the clear increase determination rule of the average difference method.
4. Spatial Reference
The current DOP price is at a high level within the 60-day, 3-month, and 1-year periods, corresponding to the 5th tier out of 5 tiers, with limited upside potential.
5. 1-Year Trend Chart Display
VI. Upstream, Downstream, and Market Quotation Dynamics
Industry Chain Overview: The upstream raw materials for DOP include n-octanol, phthalic anhydride, and iso-octanol. Currently, the prices of both iso-octanol and phthalic anhydride are at highs within a one-year cycle and are simultaneously trending upward, providing strong cost support for DOP. Downstream demand primarily comes from PVC plasticizers, and rigid demand procurement remains stable.
Recent corporate quotation dynamics: From September 7, 2026, to September 10, the quotations of mainstream DOP producers in China have been increased for 4 consecutive days, with a cumulative price increase of 150-500 CNY per ton. On September 10, Shandong Shengfeng Chemical quoted 10,255 CNY/ton (an increase of 100 CNY/ton), Dongying Yimaido Chemical quoted 10,200 CNY/ton (an increase of 300 CNY/ton), and Zhejiang Hongbo New Materials quoted 10,500 CNY/ton (an increase of 200 CNY/ton).
VII. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
(Source of the article: )
