Market Overview - On September 18, the electronic chemicals sector rose by 1.96%, led by Siquan New Materials, while the Shanghai Composite Index closed at 3831.66, down 1.15% [1] - The Shenzhen Component Index closed at 13075.66, down 1.06% [1] Top Performers in Electronic Chemicals Sector - Siquan New Materials (301489) closed at 231.08, up 5.76% with a trading volume of 41,100 shares and a transaction value of 943 million [1] - Zhongjuxin (688549) closed at 9.95, up 4.85% with a trading volume of 1,426,600 shares and a transaction value of 1.416 billion [1] - Dinglong Co., Ltd. (300054) closed at 33.00, up 3.22% with a trading volume of 480,000 shares and a transaction value of 1.595 billion [1] Underperformers in Electronic Chemicals Sector - Lier Technology (688683) closed at 36.28, down 5.25% with a trading volume of 24,000 shares and a transaction value of 88.918 million [2] - Guanggang Gas (688548) closed at 11.20, down 3.53% with a trading volume of 242,300 shares and a transaction value of 275 million [2] - Guoci Materials (300285) closed at 22.50, down 2.47% with a trading volume of 350,200 shares and a transaction value of 796 million [2] Capital Flow Analysis - The electronic chemicals sector experienced a net outflow of 764 million from institutional investors, while retail investors saw a net inflow of 731 million [2] - The sector's overall capital flow indicates a mixed sentiment, with institutional investors pulling back while retail investors are increasing their positions [2] Individual Stock Capital Flow - Strong New Materials (300429) had a net inflow of 40.744 million from institutional investors, but a net outflow of 21.407 million from retail investors [3] - Weiteou (301630) saw a net inflow of 32.697 million from institutional investors, with a significant net outflow from retail investors of 28.427 million [3] - Macro Electronic (603002) had a net inflow of 13.911 million from institutional investors, while retail investors contributed a net inflow of 2.451 million [3]