女富豪熊海涛被留置调查，旗下3家上市公司股价齐跌

Group 1 - The actual controller of Dongcai Technology, Gaomeng New Materials, and Yichang Technology, Xiong Haitao, has been detained and is under investigation by the Sichuan Provincial Supervisory Committee [1][3] - Following the announcement, the stock prices of the three companies fell, with Dongcai Technology down 1.97%, Gaomeng New Materials down over 11%, and Yichang Technology down over 6% [1] - All three companies stated that their board members and senior management are performing their duties normally, and the operational management situation remains stable, indicating no significant negative impact on their business operations [1] Group 2 - Dongcai Technology focuses on the research, development, manufacturing, and sales of new materials, with a market value exceeding 26 billion [3] - Yichang Technology, established in 1997, primarily engages in the manufacturing of electrical machinery and equipment, with a market value exceeding 3.3 billion [3] - Gaomeng New Materials, founded in 1999, specializes in the research, production, and sales of composite adhesive materials and other functional materials, with a market value exceeding 5.5 billion [3] - The combined market value of the three listed companies is nearly 35 billion [3] Group 3 - Xiong Haitao is also the largest shareholder of all three companies, with the controlling entity being Gaojin Group [3] - Xiong Haitao has held various significant positions in the industry, including executive director of Gaojin Fuheng Group and vice chairman of the aforementioned companies [3] - Xiong Haitao and her husband, Yuan Zhimin, have appeared multiple times on the Hurun Rich List, with their wealth reported at 11.5 billion in 2023 and 14 billion in 2025 [4]