The world's biggest producer of oil is now China's PetroChina, not Exxon. PetroChina wasn't even around 13 years ago.
Global Oil & Gas AG engages in the development of onshore oil and gas fields. It operates through Crude Oil...
Yuma Energy, Inc. is a U.S.-based oil and gas company focused on the exploration for, and development of, conventional and...
PetroChina Co., Ltd.
No. 9 Dongzhimen North Street Dongcheng District
Beijing , BE 100007
SIC Code: 1311