This period's short-term trend analysis of phthalic anhydride spot prices using the mean difference method shows that the current phthalic anhydride prices are in a strong rebound and bullish oscillation pattern, with prices at a high level for the 1-year cycle, limiting the room for further increases. On the supply side, enterprise operations are generally stable, and inventories are generally low. In late September, manufacturer quotes slightly decreased. On the demand side, close attention should be paid to the purchasing pace of downstream industries such as plasticizers and unsaturated resins.
Data Explanation
The most recent available data is up to September 28, 2026, and it is recommended to refer to real-time data.
1. Mean Deviation Change Table
| Average Difference Type | Value as of 2026.9.28 | Value as of 2026.9.27 | Direction of Change |
|---|---|---|---|
| 5-Day Average Difference (D5) | 0 | -10 | + |
| 10-Day Average Difference (D10) | -100 | -120 | + |
| 20-Day Average Difference (D20) | -28.33 | 24.17 | - |
2. Signal Status Determination
The current signal indicates a strong rebound (bullish, of a rebound nature).
3. Trend Direction Conclusion
The current phthalic anhydride price trend in China is fluctuating.
Reason: On September 28, 2026, the price differentials for phthalic anhydride on days 5, 10, and 20 all exhibited a change direction of (+, +, −) compared to the previous day. Since the three differ not entirely in their directional movement, this meets the criteria for an oscillating trend, indicating that the market is currently in a rebound phase with a slightly bullish bias.
4. Position Space Reference
Phthalic anhydride 60-day cycle price is at a medium-high level, and the 3-month and 1-year cycle prices are both at high levels. Among them, the price within the 1-year cycle is in the highest 20% range, with limited room for further increases.
5. Fundamental Reference
In late September, the overall operation of phthalic anhydride manufacturers in China remained stable. Zhenjiang Liancheng Chemical's 120,000-ton phthalic anhydride plant was shut down for maintenance, while the operating rates of other manufacturers were mostly at 60% or higher, with generally low inventory levels. On September 23-24, manufacturer quotes generally fell by 50-200 CNY/ton, with current ex-factory quotes mostly maintained around 10,000 CNY/ton. The actual transaction prices slightly decreased, and manufacturers mainly focused on limited order acceptance and self-use. The main downstream demand comes from plasticizers, unsaturated resins, and other fields, and it is necessary to continuously monitor the procurement pace of downstream customers.
6. Trend Chart Display
7. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
(Source: China)
