Shang Hai Zheng Quan Bao·2026-02-06 18:36Group 1 - Two companies, Yahui Long and Tian Sheng New Materials, are under investigation by the China Securities Regulatory Commission (CSRC) for suspected violations of information disclosure laws [1][6] - Yahui Long is being investigated for allegedly misleading statements in its announcement regarding a strategic cooperation framework agreement [2][4] - Tian Sheng New Materials is under investigation for potentially failing to disclose related party transactions for the year 2023 [1][6] Group 2 - Yahui Long's announcement about its cooperation with Brain Machine Star Chain included inaccurate and incomplete information, particularly regarding the technical paths of the products involved [2][3][4] - The Shanghai Stock Exchange issued a regulatory warning to Yahui Long and its former board secretary for failing to provide adequate risk disclosures, which led to a significant stock price increase of 6.52% on January 6 [4][5] - Tian Sheng New Materials is currently conducting normal business operations and claims that the investigation will not significantly impact its activities [6]