October 13th, according to reports
On October 12, 2026, analysis based on the mean‑difference method indicates that the current price trend is clearly downward. Prices over the 60‑day and three‑month cycles are at mid‑to‑high levels, while the one‑year cycle remains at mid‑to‑low levels. In the short term, attention should be paid to fluctuations in upstream raw materials such as calcium carbide and ethylene, as well as to the release of demand in downstream sectors including profiles, pipes, and films.
The data used for this analysis is up to October 12, 2026, and it is recommended to refer to real-time data.
I. Table of Finite Differences
| Difference Type | Value on 2026.10.12 | Value on 2026.10.11 | Direction of Change |
|---|---|---|---|
| 5-Day Difference (D5) | -38.00 | 40.00 | - |
| 10-Day Difference (D10) | 1.50 | 5.00 | - |
| 20-Day Difference (D20) | 70.80 | 83.20 | - |
II. Signal State Determination
The current three deviations have changed in the same direction as the previous day, all being negative, which is a clear signal of a decline.
III. Conclusions on Trend Directions
The trend is clearly downward. Reason: The changes in the 5-day, 10-day, and 20-day moving average differences from the previous day are all negative, which meets the criteria for a clear downward trend according to the moving average difference method.
IV. Positional Spatial Reference
60-day cycle and 3-month cycle prices are in the 4th tier (upper-middle) of the 5-tier system, with limited short-term upside potential;
1 year cycle price is at the 2nd level (lower middle) out of 5 levels, with limited long-term downside potential.
V. Price Trend Chart for the Past Year
VI. Risk Warning
The above analysis is for reference only and does not constitute trading advice.
