开评：三大指数涨跌不一 有色金属板块涨幅居前

Market Performance - The three major indices showed mixed performance, with the Shanghai Composite Index rising by 0.02%, the Shenzhen Component Index opening flat, and the ChiNext Index declining by 0.19% [1] Sector Performance - Active sectors at the opening included non-ferrous metals, chemical fiber, shipbuilding, commercial retail, and gold concepts [1] - Sectors that opened lower included paper printing, pharmaceutical commerce, glass fiber, insurance, and semiconductors [1]