伦敦期铜脱离一周高点，受关税不确定性影响

Group 1 - The core viewpoint of the articles revolves around the uncertainty in the copper market due to the recent changes in U.S. tariffs, with potential implications for global trade and metal prices [1][2] - The London Metal Exchange (LME) three-month copper price fell by 0.1% to $12,941.50 per ton, after reaching a high of $13,050, influenced by a weaker dollar and market volatility [1] - IndusInd Securities analyst Jigar Trivedi noted that the uncertainty surrounding tariffs and light trading conditions are putting pressure on copper prices [1] Group 2 - Morgan Stanley forecasts a supply deficit of 130,000 tons in the copper market by 2026, with expectations of a mild surplus in 2027 due to increased copper scrap supply and the recovery of several mines that faced significant supply disruptions in 2025 [3] - The aluminum market is projected to face a supply deficit of 230,000 tons in 2026, with LME three-month aluminum prices slightly declining by 0.1% to $3,100 per ton [4] - Other base metals showed mixed performance, with lead down 0.1% to $1,963 per ton, zinc down 0.2% to $3,376 per ton, nickel up 1.3% to $17,580 per ton, and tin rising 1.2% to $46,930 per ton [4]