油服工程板块12月17日涨0.52%，中曼石油领涨，主力资金净流入390.95万元

Group 1 - The oil service engineering sector increased by 0.52% compared to the previous trading day, with Zhongman Petroleum leading the gains [1] - The Shanghai Composite Index closed at 3870.28, up by 1.19%, while the Shenzhen Component Index closed at 13224.51, up by 2.4% [1] - A detailed table of individual stock performance in the oil service engineering sector is provided [1] Group 2 - The net inflow of main funds in the oil service engineering sector was 390.95 million yuan, while speculative funds saw a net outflow of 3487.36 million yuan [2] - Retail investors contributed a net inflow of 3096.41 million yuan to the sector [2] - A detailed table of fund flow for individual stocks in the oil service engineering sector is included [2]