专业工程板块9月15日跌0.13%，能辉科技领跌，主力资金净流出1.97亿元

Market Overview - On September 15, the professional engineering sector declined by 0.13%, with Nenghui Technology leading the drop [1] - The Shanghai Composite Index closed at 3860.5, down 0.26%, while the Shenzhen Component Index closed at 13005.77, up 0.63% [1] Stock Performance - Baoli Technology (603959) saw a significant increase of 10.05%, closing at 6.46 with a trading volume of 570,300 shares and a turnover of 357 million yuan [1] - Shikong Technology (605178) also rose by 10.01%, closing at 25.71 with a trading volume of 41,500 shares and a turnover of 105 million yuan [1] - Conversely, Nenghui Technology (301046) experienced a decline of 4.71%, closing at 25.90 with a trading volume of 95,700 shares and a turnover of 248 million yuan [2] Capital Flow - The professional engineering sector experienced a net outflow of 197 million yuan from institutional investors, while retail investors saw a net inflow of 213 million yuan [2][3] - The top stocks with significant net inflows from retail investors included Yongfu Co. (300712) with 34.54 million yuan and Shikong Technology (605178) with 24.68 million yuan [3]