Zheng Xing Xing Ye Ri Bao·2025-11-18 08:11Core Insights - The oil service engineering sector experienced a decline of 1.87% on November 18, with PetroChina Oilfield Services leading the drop [1] - The Shanghai Composite Index closed at 3939.81, down 0.81%, while the Shenzhen Component Index closed at 13080.49, down 0.92% [1] Stock Performance - Zhongman Petroleum (603619) closed at 24.93, up 3.40% with a trading volume of 204,600 shares and a transaction value of 508 million yuan [1] - Potential Energy (300191) closed at 20.71, up 0.05% with a trading volume of 85,200 shares and a transaction value of 176 million yuan [1] - Other notable declines include PetroChina Oilfield Services (600871) down 4.26% and Tongyuan Petroleum (300164) down 3.73% [2] Capital Flow - The oil service engineering sector saw a net outflow of 136 million yuan from institutional investors, while retail investors had a net inflow of 184 million yuan [2] - Major stocks like Zhongman Petroleum and Renji Co. experienced mixed capital flows, with Zhongman Petroleum seeing a net inflow of 33.83 million yuan from institutional investors [3]