三维股份：吴善国累计质押股份5030万股

Group 1 - Wu Shanguo, a major shareholder of Sanwei Co., holds approximately 147 million shares, accounting for 14.24% of the total share capital [1] - Wu has pledged 50.3 million shares, which is about 34.25% of his total holdings and 4.88% of the company's total share capital [1] - Together with his associate Ye Jiting, they hold around 178 million shares, representing 17.27% of the total share capital [1] Group 2 - The revenue composition of Sanwei Co. for the first half of 2025 is as follows: polyester fiber 34.23%, BDO and calcium carbide 32.76%, rubber industry 24.6%, concrete sleeper 4.78%, and others 3.62% [1] - As of the latest report, the market capitalization of Sanwei Co. is 12 billion yuan [2]