This daily report is based on the mean difference analysis framework, combining the latest supply and demand, price, and industrial chain data for phthalic anhydride to judge the short-term trend: currently, the cost end of phthalic anhydride, including ortho-xylene and industrial naphthalene, is strongly supported by rising prices. Downstream plasticizers have seen an increase in operating rates, providing support for demand. In the short term, the trend is expected to be volatile but with a bullish bias. Currently, the price is at a high level over the past year, and the room for further increases is limited.
Data Description
The latest available phthalic anhydride price and average difference data for China is up to November 3, 2026. It is recommended to refer to real-time data.
I. Table of Finite Differences
| Mean Difference Indicator | Value on 2026.11.3 | Value on 2026.11.2 | Direction of Change |
|---|---|---|---|
| 5-Day Mean Difference (D5) | 13.34 | 0 | + |
| 10-Day Mean Difference (D10) | 28.33 | 38.33 | - |
| 20-Day Mean Difference (D20) | 26.66 | 19.17 | + |
II. Signal State Determination
When the three consecutive divided difference directions form the combination (+, -, +), the corresponding signal is a pullback (slightly bullish).
III. Conclusions on Trend Directions
The short-term trend is choppy (leaning bullish), for the following reason: the three moving averages did not all change in the same direction as the previous day, so they do not meet the criteria for a clear uptrend or downtrend; thus, the market is within a trading range. The pullback signal points to a bullish bias.
4. Spatial Reference
The current phthalic anhydride price in China is at the 5th level (high) for the 60-day, 3-month, and 1-year periods, with limited room for further increases.
V. Price Trend Chart for the Past Year
VI. Fundamental Support Reference
Supply Side: Chinese phthalic anhydride manufacturers have increased their operating rates, and the overall spot supply is stable. Some manufacturers are oversold and are limiting new orders.
Cost Side: Crude oil prices have been fluctuating higher, upstream phthalic anhydride and industrial naphthalene prices have risen strongly, and cost support for phthalic anhydride has increased.
Demand Side: Downstream plasticizer prices have risen, operating rates at producers have rebounded, and rigid demand procurement continues to support phthalic anhydride demand.
VII. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
(Source: )
