宇晶股份：控股股东杨宇红累计质押1690万股

Group 1 - The core point of the article is that Yujing Co., Ltd. announced the release and extension of share pledges by its controlling shareholders, indicating a potential shift in shareholder confidence [1] - As of the announcement date, Yang Yuhong has pledged a total of 16.9 million shares, accounting for 41.78% of his holdings, while Yang Jiawei has pledged 16.8 million shares, representing 49.7% of his holdings [1] - The company's market capitalization is reported to be 6.9 billion yuan [1] Group 2 - For the fiscal year 2024, Yujing Co., Ltd.'s revenue composition is as follows: 68.42% from metal processing machinery manufacturing, 24.88% from silicon wafer and slicing processing services, 4.72% from thermal field system products, and 1.98% from superhard material products [1]