华特达因：股东郭伟松增持公司股份达到3.7%

Group 1 - The core point of the announcement is that major shareholder Guo Weisong plans to increase his stake in the company by acquiring 8.66 million shares, which represents 3.7% of the total share capital [1] - After this acquisition, Guo Weisong will hold a total of 22.72 million shares, accounting for 9.7% of the company's total share capital [1]