油服工程板块2月4日涨3.08%，潜能恒信领涨，主力资金净流出5824.6万元

Core Insights - The oil service engineering sector experienced a rise of 3.08% on February 4, with Qianeng Hengxin leading the gains [1] - The Shanghai Composite Index closed at 4102.2, up 0.85%, while the Shenzhen Component Index closed at 14156.27, up 0.21% [1] Sector Performance - Qianeng Hengxin (300191) closed at 32.12, up 9.25% with a trading volume of 347,700 shares and a turnover of 1.102 billion [1] - Zhongman Petroleum (603619) closed at 32.41, up 7.71% with a trading volume of 467,100 shares [1] - Keli Co., Ltd. (920088) closed at 46.87, up 6.55% with a trading volume of 121,200 shares [1] - Zhunyou Co. (002207) closed at 10.00, up 6.16% with a trading volume of 675,700 shares [1] - PetroChina Oilfield Services (600871) closed at 3.00, up 4.17% with a trading volume of 6,965,400 shares [1] Capital Flow - The oil service engineering sector saw a net outflow of 58.246 million from institutional investors and 71.7508 million from retail investors, while retail investors had a net inflow of 130 million [1] - The detailed capital flow for individual stocks indicates varying levels of net inflow and outflow among different companies [2]