玻璃玻纤板块9月19日跌0.75%，中材科技领跌，主力资金净流出2.31亿元

Market Overview - On September 19, the glass fiber sector declined by 0.75% compared to the previous trading day, with China National Materials Technology leading the decline [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 glass fiber sector showed mixed performance, with China Jushi (600176) increasing by 2.29% to close at 15.63, while China National Materials Technology (002080) fell by 3.36% to close at 36.54 [1][2] - The trading volume and turnover for major stocks included: - China Jushi: 888,900 shares, turnover of 1.382 billion yuan - Qibin Group (601636): 282,900 shares, turnover of 185 million yuan - South Glass A (000012): 131,100 shares, turnover of 61.39 million yuan [1][2] Capital Flow - The glass fiber sector experienced a net outflow of 231 million yuan from institutional investors, while retail investors saw a net inflow of 163 million yuan [2] - The capital flow for specific stocks indicated: - Shandong Glass Fiber (605006) had a net inflow of 12.87 million yuan from institutional investors [3] - Qibin Group (601636) saw a net inflow of 5.50 million yuan from institutional investors [3] - China Jushi (600176) had a net outflow of 1.07 million yuan from retail investors [3]