The upstream sector of oil and natural gas industry becomes the most profitable industry in China in 2005, according to a survey released by the China’s State
Following the ending of the 10th Five-Year Plan comes the eleventh one. After reorganization, restructuring and going public, the three major oil companies in C
For networks that are directed or can be represented by a directed network,reversing one or more of theuni-directional links may provide the ability to reconne