电子化学品板块9月11日涨3.17%，同宇新材领涨，主力资金净流入1.68亿元

Group 1 - The electronic chemicals sector increased by 3.17% on September 11, with Tongyu New Materials leading the gains [1] - The Shanghai Composite Index closed at 3875.31, up 1.65%, while the Shenzhen Component Index closed at 12979.89, up 3.36% [1] - Key stocks in the electronic chemicals sector showed significant price increases, with Tongyu New Materials rising by 10.53% to a closing price of 200.06 [1] Group 2 - The electronic chemicals sector experienced a net inflow of 168 million yuan from institutional investors, while retail investors saw a net inflow of approximately 48.53 million yuan [2] - Major stocks like Tiantong Co. and Tongyu New Materials had varying net inflows and outflows from different investor types, indicating mixed investor sentiment [3] - The trading volume for Tongyu New Materials reached 26,000 hands, with a total transaction value of 504 million yuan [1]