Jin Rong Jie·2025-08-20 08:50Group 1 - The Shanghai Composite Index rose by 1.04%, closing at 3766.21 points, while the Hang Seng Index increased by 0.17%, closing at 25165.94 points [1] - Sinopec Oilfield Service Corporation (SSC) has an A/H premium of 180.2%, ranking fifth among A/H shares [1] - SSC's A-shares closed at 2.06 yuan, with a gain of 1.48%, while its H-shares closed flat at 0.8 Hong Kong dollars [1] Group 2 - SSC is a major integrated oil and gas engineering and technical service company controlled by China Petroleum & Chemical Corporation, with over 60 years of operational experience [1] - The company was formed through the restructuring of various oilfield enterprises under China Petroleum & Chemical Corporation in June 2012 [1] - SSC was listed simultaneously in Shanghai and Hong Kong in 2014, with stock codes SH600871 and HK1033 [1]