上期所基本金属期货夜盘收盘涨跌不一，沪铝涨0.07%

Group 1 - The core viewpoint of the article highlights the mixed performance of basic metal futures on the Shanghai Futures Exchange during the night session on August 19, with some metals experiencing slight gains while others faced declines [1][2]. Group 2 - Shanghai aluminum rose by 0.07%, while lead increased by 0.03% [1]. - Nickel fell by 0.10%, tin decreased by 0.18%, and copper dropped by 0.23% [1]. - Stainless steel declined by 0.27%, zinc fell by 0.63%, and alumina experienced a significant drop of 1.28% [1].