600169，立案调查！

Group 1 - Taiyuan Heavy Industry has been investigated by the China Securities Regulatory Commission (CSRC) for suspected violations of information disclosure laws [4] - The company announced that its controlling shareholder, Taiyuan Heavy Machinery Group Co., Ltd., plans to increase its stake in the company by investing between 80 million to 160 million yuan within the next 12 months [6][8] - As of July 25, 2023, Taiyuan Heavy Industry's stock price was 2.63 yuan per share, with a market capitalization of 8.803 billion yuan, reflecting a decline of 2.95% [1] Group 2 - The controlling shareholder currently holds 50.15% of Taiyuan Heavy Industry's shares and has just completed a previous share buyback plan [8] - The company reported significant fluctuations in its net profit over recent years, with net profits of 88.92 million yuan in 2022, a loss of 16.64 million yuan in 2023, and a profit of 28.02 million yuan in 2024 [10][11] - Sales expenses increased by 30% year-on-year to 18.6 million yuan in 2024, attributed to intensified marketing efforts in a competitive industry [12]