电子化学品板块9月19日涨2.04%，同宇新材领涨，主力资金净流入10.73亿元

Market Overview - The electronic chemicals sector increased by 2.04% on September 19, with Tongyu New Materials leading the gains [1] - The Shanghai Composite Index closed at 3820.09, down 0.3%, while the Shenzhen Component Index closed at 13070.86, down 0.04% [1] Stock Performance - Key stocks in the electronic chemicals sector showed significant price increases, with Tongyu New Materials rising by 12.14% to a closing price of 212.40 [1] - Other notable performers included Tiantong Co., which increased by 10.03%, and Xilong Science, which rose by 10.02% [1] Capital Flow - The electronic chemicals sector saw a net inflow of 1.073 billion yuan from institutional investors, while retail investors experienced a net outflow of 579 million yuan [2] - Tiantong Co. attracted the highest net inflow from institutional investors at 732 million yuan, while retail investors had a net outflow of 387 million yuan [2] - Xilong Science also saw significant institutional support with a net inflow of approximately 297 million yuan [2]