A股早评：三大指数高开，存储芯片股延续涨势，盈方微涨停，胜科纳米、朗科科技涨超10%，有色金属板块回调

Core Viewpoint - The A-share market opened positively with all three major indices rising, indicating a bullish sentiment among investors [1] Market Performance - The Shanghai Composite Index opened up by 0.22%, reaching 4126.07 points [1] - The Shenzhen Component Index increased by 0.41% [1] - The ChiNext Index rose by 0.52% [1] Sector Performance - Storage chip stocks continued their upward trend, with Yingfang Micro reaching the daily limit, and both Shengke Nano and Langke Technology rising over 10% [1] - Major companies in the storage sector, including Micron, SanDisk, and Western Digital, achieved new highs overnight [1] - Gold and silver prices have retreated from historical highs, leading to a collective adjustment in the gold and non-ferrous metal sectors [1]