On August 19, the spot price of DOP continued its upward trend, with mainstream manufacturers raising their quotes by 150–250 CNY per ton. The mean difference indicator clearly signals an upward trend. Currently, prices are at the high end of a one-year cycle and also at the high end of a 60-day cycle, suggesting that the room for further price increases may be somewhat limited. In the short term, it’s crucial to monitor developments along the upstream and downstream segments of the industrial chain as well as manufacturers’ production schedules.
I. Spot Market Dynamics
On August 19, quotes from China’s mainstream DOP manufacturers all showed a noticeable increase:
Shandong Shengfeng Chemical Co., Ltd. DOP quotation is 9,255 CNY/ton, an increase of 150 CNY/ton from August 18, with the actual transaction price also rising.
Dongying Yimeide Chemical's DOP ex-factory quotation is 9,200 CNY/ton, an increase of 250 CNY/ton from August 18, with the actual transaction price also rising.
The ex-factory price of DOP from Zhenjiang Liancheng Chemical Industry Co., Ltd. is 9,350 CNY per ton, an increase of 150 CNY per ton compared to August 18.
Zhejiang Hongbo New Material Technology Co., Ltd. DOP quotation is 9,500 CNY/ton, an increase of 200 CNY/ton from August 18th.
II. Table of Mean Difference Changes
| Average Difference Type | Today's Value (2026-08-19) | Yesterday's Value (2026-08-18) | Direction of Change |
|---|---|---|---|
| 5-day Average Difference (D5) | 95 | 75 | + |
| 10-day Average Difference (D10) | 80.84 | 67.5 | + |
| 20-day Average Difference (D20) | 66.66 | 50 | + |
III. Signal Status Determination
The current three average differences (5-day, 10-day, and 20-day average differences) are all positive compared to the previous day, indicating a clear upward trend.
IV. Trend Direction Conclusions
The price trend is clearly upward. Reasons: The 5-day, 10-day, and 20-day average differences compared to yesterday are all showing positive growth, and the direction of all three is completely consistent, meeting the criteria for a clear upward trend according to the average difference method; at the same time, the quotes from major Chinese manufacturers have risen for two consecutive days, and the actual transaction prices have also increased, indicating strong upward momentum in the spot market.
V. Positional Spatial Reference
The price is at a medium-to-high level over the 1-year cycle (in the 60%-80% range), and at a high level over the 60-day cycle (reaching up to the top 20% range). Short-term upside potential is limited, so caution is advised regarding the risk of a pullback from these elevated levels.
VI. Trend Chart Display
VII. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
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