非金属材料板块11月21日跌4.31%，索通发展领跌，主力资金净流入8044.22万元

Market Overview - The non-metal materials sector experienced a decline of 4.31% on November 21, with Suotong Development leading the drop [1] - The Shanghai Composite Index closed at 3834.89, down 2.45%, while the Shenzhen Component Index closed at 12538.07, down 3.41% [1] Stock Performance - Jiangsu Materials (001296) saw a significant increase of 10.00%, closing at 25.51, with a trading volume of 161,000 shares and a turnover of 398 million [1] - Other notable declines included Suotong Development (603612) down 7.33% to 22.87, and Tianma New Materials (920971) down 6.94% to 30.29 [2] Capital Flow - The non-metal materials sector had a net inflow of 80.44 million from institutional investors, while retail investors experienced a net outflow of 54.42 million [2] - The main stocks with significant capital flow included Jiangsu Materials with a net inflow of 116 million, while Suotong Development had a net outflow of 7917.43 million from retail investors [3]