化学原料板块8月21日涨1.71%，江天化学领涨，主力资金净流出7.25亿元

Group 1 - The chemical raw materials sector increased by 1.71% on August 21, with Jiangtian Chemical leading the gains [1] - The Shanghai Composite Index closed at 3771.1, up 0.13%, while the Shenzhen Component Index closed at 11919.76, down 0.06% [1] - Jiangtian Chemical's stock price rose by 10.47% to 31.98, with a trading volume of 189,300 shares and a transaction value of 587 million yuan [1] Group 2 - The chemical raw materials sector experienced a net outflow of 725 million yuan from main funds, while retail investors saw a net inflow of 696 million yuan [2] - The top gainers in the sector included Zhongke Titanium White, which rose by 10.11% to 4.90, and Shanshui Technology, which increased by 6.73% to 27.44 [1][2] - The overall trading volume and transaction values for various stocks in the sector varied, with Zhongke Titanium White achieving a transaction value of 1.456 billion yuan [1][2] Group 3 - The main fund inflows and outflows for specific stocks showed that Zhongke Titanium White had a net inflow of 226 million yuan, while retail investors had a net outflow of 77.84 million yuan [3] - Jiangtian Chemical also saw a net inflow of 21.45 million yuan from main funds, despite a net outflow of 20.58 million yuan from retail investors [3] - The data indicates a mixed sentiment among different investor types within the chemical raw materials sector [3]