Market Overview - The non-metal materials sector declined by 1.58% on January 30, with Bingyang Technology leading the drop [1] - The Shanghai Composite Index closed at 4117.95, down 0.96%, while the Shenzhen Component Index closed at 14205.89, down 0.66% [1] Stock Performance - Notable gainers included: - Lianrui New Materials (688300) with a closing price of 66.79, up 2.60% and a trading volume of 64,200 shares, totaling 422 million yuan [1] - Changjiang Materials (001296) closed at 29.29, up 2.48% with a trading volume of 80,100 shares, totaling 236 million yuan [1] - Significant decliners included: - Bingyang Technology (920675) closed at 11.55, down 4.55% with a trading volume of 94,500 shares, totaling 113 million yuan [2] - Strength Diamond (301071) closed at 39.90, down 4.52% with a trading volume of 231,400 shares, totaling 906 million yuan [2] Capital Flow - The non-metal materials sector experienced a net outflow of 180 million yuan from institutional investors, while retail investors saw a net inflow of 258 million yuan [2] - The detailed capital flow for selected stocks showed: - Lianrui New Materials had a net inflow of 19.19 million yuan from institutional investors [3] - Bingyang Technology faced a net outflow of 9.72 million yuan from institutional investors [3] - Quartz Shares (603688) had a net outflow of 39.90 million yuan from institutional investors [3]