[SMM Aluminum Morning Session Summary: Strong Macro Support Maintains Aluminum Prices Fluctuating at Highs] On the night session of October 28, the most-traded SHFE aluminum contract opened at 21,180 yuan/mt, with the highest price at 21,280 yuan/mt and the lowest price at 21,155 yuan/mt, finally settling at 21,245 yuan/mt, up 0.50%. The night session showed a pattern of rising initially and then fluctuating, with the trading center moving upward. From a technical perspective, the MA moving averages continued their bullish alignment (MA5: 21,249.00 > MA10: 21,205.00 > MA20: 21,077.25 > MA60: 20,918.67), while the MACD 4-hour candlestick level saw a narrowing of the red bars, maintaining a golden cross state (DIFF: 99.48, DEA: 87.72). In terms of trend, SHFE aluminum remains in an upward channel but is experiencing a short-term pullback. Based on recent highs and lows (low: 20,640, high: around 21,365), the resistance level is expected to be in the range of 21,350-21,550, and the support level in the range of 20,650-20,850.