Market Overview - On September 25, the professional services sector declined by 0.46%, with Guoyi Bidding leading the drop [1] - The Shanghai Composite Index closed at 3853.3, down 0.01%, while the Shenzhen Component Index closed at 13445.9, up 0.67% [1] Stock Performance - Notable gainers in the professional services sector included: - Anke Detection: closed at 29.10, up 2.11% with a trading volume of 130,800 shares and a turnover of 384 million [1] - Guoji Detection: closed at 52.16, up 1.86% with a trading volume of 28,200 shares and a turnover of 149 million [1] - Lansheng Co.: closed at 10.41, up 1.66% with a trading volume of 118,000 shares and a turnover of 122 million [1] - Major decliners included: - Guoyi Bidding: closed at 12.96, down 2.41% with a trading volume of 23,200 shares and a turnover of 30.42 million [2] - Kaipu Detection: closed at 21.23, down 2.03% with a trading volume of 11,800 shares and a turnover of 25.18 million [2] - Steel Research Nake: closed at 16.73, down 1.99% with a trading volume of 70,100 shares and a turnover of 118 million [2] Capital Flow - The professional services sector experienced a net outflow of 110 million from institutional investors, while retail investors saw a net inflow of 15.66 million [2] - Notable capital flows included: - Shengke Nano: net inflow of 7.89 million from institutional investors, but a net outflow of 23.03 million from retail investors [3] - Anke Detection: net inflow of 7.63 million from institutional investors, with a net outflow of 1.22 million from retail investors [3] - Lansheng Co.: net inflow of 4.97 million from institutional investors, but a net outflow of 5.58 million from retail investors [3]