国际铜夜盘收涨0.46%，沪铜收涨0.90%

Group 1 - International copper futures rose by 0.46% in the night session, while Shanghai copper increased by 0.90% [1] - Shanghai aluminum decreased by 0.23%, and Shanghai zinc saw a slight increase of 0.02% [1] - Shanghai lead and nickel both experienced minor gains, with lead up by 0.03% and nickel up by 0.39% [1] Group 2 - Shanghai tin fell by 0.47%, while alumina saw a marginal increase of 0.04% [1] - Aluminum alloy prices dropped by 0.40%, indicating a mixed performance in the aluminum sector [1] - Stainless steel prices increased by 0.64%, reflecting positive momentum in that market segment [1]