专业服务板块12月11日跌1.1%，广电计量领跌，主力资金净流出1.74亿元

Core Viewpoint - The professional services sector experienced a decline of 1.1% on December 11, with significant losses led by Guangdian Measurement, while the Shanghai Composite Index fell by 0.7% and the Shenzhen Component Index dropped by 1.27% [1][2]. Group 1: Market Performance - The closing price of the Shanghai Composite Index was 3873.32, down 0.7% [1]. - The Shenzhen Component Index closed at 13147.39, reflecting a decrease of 1.27% [1]. - The professional services sector saw a net outflow of 174 million yuan from main funds, while retail investors contributed a net inflow of 44.39 million yuan [2]. Group 2: Individual Stock Performance - Notable gainers included: - Electric Science Institute (300215) with a closing price of 7.61, up 7.79% on a trading volume of 775,000 shares and a transaction value of 594 million yuan [1]. - Zhongfang Biao (920122) closed at 36.20, up 5.42% with a transaction value of 71.96 million yuan [1]. - Beikang Testing (920160) closed at 24.48, up 4.08% with a transaction value of 187 million yuan [1]. - Significant losers included: - Guangdian Measurement (002967) with a closing price of 22.40, down 4.68% and a transaction value of 720 million yuan [2]. - Lansheng Co. (600826) closed at 10.70, down 2.82% with a transaction value of 79.03 million yuan [2]. - Guangdong Construction Science (301632) closed at 24.86, down 2.55% with a transaction value of 71.06 million yuan [2]. Group 3: Fund Flow Analysis - The main fund inflows were led by: - Beikang Testing (920160) with a net inflow of 17.18 million yuan, accounting for 9.20% of its trading volume [3]. - Puni Testing (300887) with a net inflow of 16.55 million yuan, representing 6.81% of its trading volume [3]. - Shicun Testing (301228) with a net inflow of 14.13 million yuan, making up 10.60% of its trading volume [3]. - Notable outflows included: - Anche Testing (300572) with a net outflow of 15.16 million yuan, accounting for 10.98% of its trading volume [3]. - Guolai Testing (301289) with a net outflow of 15.49 million yuan, representing 12.39% of its trading volume [3].