Zheng Xing Xing Ye Ri Bao·2025-10-31 08:36Market Overview - The non-metal materials sector experienced a decline of 2.65% on October 31, with the leading stock, Strength Diamond, falling significantly [1] - The Shanghai Composite Index closed at 3954.79, down 0.81%, while the Shenzhen Component Index closed at 13378.21, down 1.14% [1] Stock Performance - Notable gainers in the non-metal materials sector included: - Tianma New Materials (Code: 920971) with a closing price of 38.88, up 3.35% and a trading volume of 110,800 shares, totaling a transaction value of 433 million [1] - Ningxin New Materials (Code: 920719) closed at 15.93, up 2.71% with a trading volume of 75,000 shares, totaling 121 million [1] - Conversely, significant decliners included: - Strength Diamond (Code: 301071) closed at 38.46, down 8.43% with a trading volume of 232,900 shares, totaling 909 million [2] - Suotong Development (Code: 603612) closed at 24.62, down 4.80% with a trading volume of 327,800 shares, totaling 812 million [2] Capital Flow - The non-metal materials sector saw a net outflow of 156 million from institutional investors, while retail investors contributed a net inflow of 1.31 billion [2][3] - The capital flow for specific stocks showed: - Strength Diamond had a net outflow of 97.86 million from institutional investors, while retail investors had a net inflow of 81.84 million [3] - Suotong Development experienced a net outflow of 36.16 million from retail investors [3]