1.INTRODUCTION
China is the second largest oil consumption country; oil refining capacity surpasses 300 million tonnes annually. The consumption of the oil volume was in a low speed rising, the degree of foreign import dependence was about 60.6%. On the other
1.INTRODUCTION
China is the second largest oil consumption country; oil refining capacity surpasses 300 million tonnes annually. The consumption of the oil volume was in a low speed rising, the degree of foreign import dependence was about 60.6%. On the other