上声电子：股东上声投资减持计划时间届满，未减持公司股份

Group 1 - The core point of the article is that Shangsheng Electronics announced that its shareholder, Shangsheng Investment, did not reduce its shares during the planned reduction period, which ended on October 16, 2025 [1] - As of the report, Shangsheng Electronics has a market capitalization of 4.5 billion yuan [1] - For the year 2024, the revenue composition of Shangsheng Electronics is 97.42% from the manufacturing of acoustic devices and components, while other businesses account for 2.58% [1]