油服工程板块1月26日涨3.48%，通源石油领涨，主力资金净流入2.54亿元

Group 1 - The oil service engineering sector increased by 3.48% on January 26, with Tongyuan Petroleum leading the gains [1] - The Shanghai Composite Index closed at 4132.61, down 0.09%, while the Shenzhen Component Index closed at 14316.64, down 0.85% [1] - Key stocks in the oil service engineering sector showed significant price increases, with Tongyuan Petroleum rising by 13.04% to a closing price of 8.93 [1] Group 2 - The oil service engineering sector saw a net inflow of 254 million yuan from institutional investors, while retail investors experienced a net outflow of 164 million yuan [2] - Major stocks like Zhongman Petroleum and CNOOC Engineering had varying net inflows and outflows, indicating mixed investor sentiment [3] - The trading volume for Tongyuan Petroleum reached 2.2671 million shares, contributing to a total transaction value of 1.958 billion yuan [1]