Today, the spot price of phthalic anhydride in China continues to rise, with major manufacturers raising their quotes. The facility utilization rate remains low, and tight inventory supports the increase in prices. Through average difference analysis, the price trend is clearly upward, but it is currently in the high range of a 1-year cycle, limiting the room for further increases.
I. Table of Mean Difference Changes
| Average Difference Type | Today's Value (2026-08-18) | Yesterday's Value (2026-08-17) | Direction of Change |
|---|---|---|---|
| 5-day Average Difference (D5) | 15 | 10 | + |
| 10-day Average Difference (D10) | 55 | 43.33 | + |
| 20-day Average Difference (D20) | -54.17 | -66.66 | + |
II. Signal Status Judgment
Three deviations all show a positive change in the same direction as the previous day, indicating a clear upward trend.
III. Trend Direction Conclusions
The price trend is clearly upward. Reason: According to the moving average difference method’s judgment rules, the changes in the 5-day, 10-day, and 20-day moving averages all show a positive direction compared to the previous day, satisfying the condition of “all three being positive → the price trend is clearly upward.” Meanwhile, in the spot market, major manufacturers such as Zhenjiang Liancheng, Tongling Chemical, and Changzhou Xinyang have all raised their quoted prices. Some manufacturers, due to low facility utilization rates and tight inventory levels, have adopted measures such as limiting order acceptance or sales volumes. These fundamental factors are providing support for price formation.
IV. Positional Spatial Reference
Phthalic anhydride prices are in the 5th tier (high, within the top 20% range of the cycle) of a 1-year price cycle in China, with limited room for further increases.
V. Trend Chart Display
Risk Warning
The above analysis is for reference only and does not constitute trading advice.
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