上纬新材大幅跳水 此前17个交易日大涨超13倍

Group 1 - The stock of Shangwei New Materials (688585) experienced a significant drop of approximately 15%, returning below 100 yuan after a previous surge of over 13 times in the past 17 trading days [2] - The Shanghai Stock Exchange issued a notice regarding the abnormal fluctuations in the stock price of Shangwei New Materials, highlighting that the company has repeatedly issued risk warning announcements [2] - The stock price increased by 1320.05% from July 9 to August 5, 2025, with multiple instances of abnormal trading behavior leading to regulatory measures against certain investors [2] Group 2 - The company's main business remains focused on the research, production, and sales of environmentally friendly high-performance corrosion-resistant materials, wind turbine blade materials, new composite materials, and circular economy materials [3] - There have been no significant changes in the company's production operations or market environment, and no major adjustments in industry policies or production costs [3] - The planned transfer of control over the company is still pending compliance confirmation from the Shanghai Stock Exchange, and there is uncertainty regarding the approval process and timeline [3]