The world's biggest producer of oil is now China's PetroChina, not Exxon. PetroChina wasn't even around 13 years ago.
Regal Petroleum plc is engaged in development, production and exploration of oil and gas. It operates under-developed gas and condensate...
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