On August 10, 2026, the spot market for phthalic anhydride in China continued to decline. The average difference indicator showed a clear downward signal, and most major manufacturers have lowered their quotations. The current price is in the high range of a 1-year cycle, with limited room for increase, and short-term downward pressure is evident.
I. Table of Mean Difference Changes
Difference Type Today's Value (2026-08-10) Yesterday's Value (2026-08-09) Direction of Change
5-day average difference (D5) -26.67 -20.00 -
10-day average difference (D10) -63.33 -60.00 -
20-day average difference (D20) -11.67 25.84 -
II. Signal Status Determination
The changes in the three central differences were all negative compared to the previous day, confirming a clear bearish signal indicating that "all three are negative."
III. Conclusions on Trend Directions
The price trend is clearly declining. Reason: The 5-day, 10-day, and 20-day average differences have all changed in a completely negative direction compared to yesterday, meeting the criteria for a clear decline according to the average difference method. Additionally, the major manufacturers in the Chinese market continue to lower their quotes, further supporting the downward trend.
4. Spatial Reference
Phthalic anhydride is currently in the 5th tier (high position) of its 1-year price cycle, with limited room for further increase. At the current high level, there is some potential for a short-term price decline.
V. Chart Display
VI. Market and Manufacturer Dynamics in China
On August 10, 2026, Zhenjiang Liancheng Chemical Industry Co., Ltd. quoted phthalic anhydride at 9,000 CNY/ton, a decrease of 100 CNY/ton; Tongling Chemical Industry Group quoted phthalic anhydride at 9,100 CNY/ton, a decrease of 100 CNY/ton; Shijiazhuang Bailong Chemical Co., Ltd. quoted phthalic anhydride at 9,000 CNY/ton, a decrease of 100 CNY/ton; Changzhou Xinyang quoted phthalic anhydride at 9,150 CNY/ton, a decrease of 50 CNY/ton. In the days prior, manufacturers' quotations also showed a downward trend, with the overall market weakening significantly.
Risk Warning
The above analysis is for reference only and does not constitute trading advice.
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