Zheng Xing Xing Ye Ri Bao·2025-07-31 08:37Market Overview - The oil service engineering sector experienced a decline of 2.09% on July 31, with Tongyuan Petroleum leading the drop [1] - The Shanghai Composite Index closed at 3573.21, down 1.18%, while the Shenzhen Component Index closed at 11009.77, down 1.73% [1] Individual Stock Performance - Notable declines in individual stocks include: - Beiken Energy (002828) down 3.98% to 10.13 [1] - PetroChina Engineering (600339) down 2.56% to 3.43 [1] - Sinopec Oilfield Service (600871) down 1.96% to 2.00 [1] - The trading volume and turnover for these stocks indicate significant market activity, with Beiken Energy having a turnover of 2.82 billion [1] Capital Flow Analysis - The oil service engineering sector saw a net outflow of 149 million from institutional investors, while retail investors contributed a net inflow of 93.17 million [2] - The capital flow for individual stocks shows: - Haiyou Engineering (600583) with a net inflow of 17.39 million from institutional investors [3] - Zhongyou Engineering (600339) with a net inflow of 15.79 million from institutional investors [3] - Beiken Energy (002828) faced a net outflow of 16.96 million from institutional investors [3]