August 13 news
On August 12, the PVC spot market in China remained stable, with futures showing a strong fluctuation that supported the firmness of spot prices. Quotations in some regions saw a slight increase. The average difference indicator showed a warning signal of stagnation, indicating a short-term trend that is slightly bearish. Considering the current price level over a one-year period, which is at a low point, the room for further decline is relatively limited. Subsequent attention should be paid to the futures trend and the production dynamics of manufacturers.
I. Table of Mean Difference Changes
Difference Type Today's Value (2026-08-12) Yesterday's Value (2026-08-11) Direction of Change
| Average Difference Type | Today's Value (2026-08-12) | Yesterday's Value (2026-08-11) | Direction of Change |
|---|---|---|---|
| 5-day Average Difference (D5) | 0.9 | -5.4 | + |
| 10-day Average Difference (D10) | 16.1 | 22.8 | - |
| 20-day Average Difference (D20) | -6.95 | -14.95 | + |
II. Signal Status Determination
The current deviation change direction combination is (+, -, +), which aligns with the stagnation warning (bearish) signal.
III. Conclusion on Trend Direction
The price trend is judged to be fluctuating. Reason: The direction of change in the three averages compared to the previous day is not entirely consistent, with the 5-day average difference turning from negative to positive, the 10-day average difference narrowing, and the 20-day average difference converging from a more negative position. Overall, it shows characteristics of stagnation, with a short-term fluctuation tending towards a downward trend.
IV. Positional Spatial Reference
60-day price range: Median, with relatively balanced upside and downside potential;
Price position for the 3-month cycle: Mid-to-low range, with some support;
1 year cycle price position: low, with limited downside space.
5. Trend Chart Display
Six, Supplementary Market Dynamics
Manufacturer operations: The PVC plant of China National Salt Inner Mongolia is operating at full capacity, with the calcium carbide method SG-5 quoted at 4,350 CNY/ton (accepting bills of exchange); Shandong Xinfaxian's PVC plant is operating normally, with the calcium carbide-based SG-5 ex-factory price at 4,400 CNY/ton (cash).
Spot market: In the Linyi region, the PVC market remained stable, with mainstream quotations for the calcium carbide method 5 type at 4,480-4,530 CNY per ton; in the Zibo region, the quotation on August 11 was 20 yuan higher than the previous day, with the mainstream pick-up price at 4,470-4,520 CNY per ton, and market transactions were decent.
