LME基本金属全线飘绿，期铜触及一周低点

Group 1 - The London Metal Exchange (LME) saw a decline in base metals, with copper prices hitting a one-week low due to rising concerns over demand prospects [1] - Shanghai Futures Exchange's main copper contract for March closed down 2.26% at 100,770 yuan per ton, while LME three-month copper fell 1.44% to 12,917 USD per ton, previously reaching a low of 12,774.50 USD [1] - Factors supporting copper prices last year included mining disruptions, supply shortage concerns, and metal flows to the U.S. to counter potential tariffs [1] Group 2 - Other metals on the Shanghai Futures Exchange also experienced declines, with nickel down 3.99% to 141,350 yuan per ton, aluminum down 2.21% to 23,925 yuan, lead down 0.46% to 17,475 yuan, and zinc down 1.10% to 24,750 yuan [1] - The main tin contract for February on the Shanghai Futures Exchange fell 6.41% to 405,240 yuan per ton [2] - The LME three-month tin price dropped 4.21% to 49,840 USD per ton, with other metals like aluminum, nickel, lead, and zinc also experiencing declines [3]