上期所基本金属期货夜盘收盘涨跌不一，不锈钢涨0.39%

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 1, with some metals experiencing gains while others faced declines [1][2]. Group 2 - Stainless steel increased by 0.39% [1] - Zinc decreased by 0.18% [1] - Nickel fell by 0.40% [1] - Copper dropped by 0.55% [1] - Aluminum declined by 0.58% [1] - Tin decreased by 0.74% [1] - Alumina fell by 0.83% [1] - Lead dropped by 0.95% [1]