Market Overview - The non-metal materials sector experienced a decline of 0.99% on November 20, with Suotong Development leading the drop [1] - The Shanghai Composite Index closed at 3931.05, down 0.4%, while the Shenzhen Component Index closed at 12980.82, down 0.76% [1] Stock Performance - Notable stock performances included: - Lianrui New Materials (688300) rose by 2.04% to a closing price of 55.40, with a trading volume of 42,200 shares and a transaction value of 233 million [1] - Longgao Co., Ltd. (605086) increased by 0.39% to 30.55, with a trading volume of 44,100 shares [1] - Suotong Development (603612) fell by 3.41% to 24.68, with a trading volume of 212,600 shares and a transaction value of 53.5 million [2] Capital Flow - The non-metal materials sector saw a net outflow of 42.67 million from institutional investors and 22.05 million from retail investors, while individual investors contributed a net inflow of 64.72 million [2] - The capital flow for specific stocks indicated: - Lianrui New Materials had a net inflow of 8.65 million from institutional investors but a net outflow of 24.10 million from retail investors [3] - Longgao Co., Ltd. experienced a net inflow of 11.57 million from institutional investors but a net outflow of 14.06 million from retail investors [3]