Group 1 - The stock price of Shuangwei New Materials reached 87.61 yuan as of August 28, 2025, with an increase of 8.53 yuan, representing a rise of 10.79% [1] - The trading volume on that day was 1.732 billion yuan, with a turnover rate of 5.13% [1] - Shuangwei New Materials specializes in the research, production, and sales of high-performance composite materials and resins, which are widely used in wind power, rail transportation, and aerospace sectors [1] Group 2 - Jin Feng Investment Holdings reduced its stake by 4.0336 million shares between June 13 and August 28, 2025, accounting for 1% of the total share capital, and has completed its reduction plan [1] - After the reduction, Jin Feng Investment Holdings still holds 4.40% of the company's shares [1] - On August 28, the net inflow of main funds was 46.7424 million yuan, representing 0.13% of the circulating market value, while the net outflow over the past five days was 127 million yuan, accounting for 0.36% of the circulating market value [1]