Zheng Xing Xing Ye Ri Bao·2026-01-28 09:04Core Viewpoint - The oil service engineering sector experienced a significant increase of 6.38% on January 28, with Tongyuan Petroleum leading the gains [1] Market Performance - The Shanghai Composite Index closed at 4151.24, up 0.27% - The Shenzhen Component Index closed at 14342.9, up 0.09% [1] Individual Stock Performance - Tongyuan Petroleum (300164) closed at 11.03, up 20.02% with a trading volume of 2.6786 million shares and a transaction value of 2.761 billion - Qianeng Hengxin (300191) closed at 29.95, up 19.28% with a trading volume of 432,800 shares and a transaction value of 1.21 billion - Keli Co., Ltd. (920088) closed at 46.55, up 15.85% with a trading volume of 133,900 shares and a transaction value of 607 million - PetroChina Oilfield Services (600871) closed at 2.94, up 10.11% with a trading volume of 3.1754 million shares and a transaction value of 904 million - Zhongman Petroleum (603619) closed at 33.88, up 10.00% with a trading volume of 379,000 shares and a transaction value of 1.242 billion [1] Capital Flow Analysis - The oil service engineering sector saw a net inflow of 940 million from main funds, while retail investors experienced a net outflow of 624 million [1] - The main fund inflow and outflow for key stocks include: - PetroChina Oilfield Services: net inflow of 237 million, net outflow from retail of 137 million - Zhongman Petroleum: net inflow of 109 million, net outflow from retail of 43 million - Tongyuan Petroleum: net inflow of 84 million, net outflow from retail of 1.15 million [2]