Core Viewpoint - The stock of Shangwei New Materials opened lower by 16.73% after a significant increase of 1320% over the previous 17 trading days, indicating potential market volatility and regulatory scrutiny [1] Group 1 - The Shanghai Stock Exchange issued a notice regarding abnormal trading behaviors by some investors that affected normal trading order and misled investment decisions [1] - As a result of these findings, the exchange has implemented self-regulatory measures, including the suspension of trading accounts for the involved investors [1]

Core Viewpoint - The stock of the company experienced significant abnormal fluctuations, with a notable increase in trading volume and turnover rates over a short period [1] Shareholding Structure - As of July 25, 2025, the company's controlling shareholder SWANCOR and two other shareholders hold approximately 85% of the company's A-shares, leaving only about 15% for external circulation [1] Trading Activity - The turnover rates for the company's stock on July 23, 24, and 25, 2025, were 9.50%, 5.44%, and 5.60% respectively, with external circulation turnover rates calculated at approximately 61%, 35%, and 36%, significantly higher than previous levels [1]