论文部分内容阅读
惠誉国际评级(Fitch Ratings)机构于2011年9月30日发布报告称,美国页岩气勘探和生产的热潮继续给北美大宗化学品带来显著的成本优势。该机构表示,预计廉价
A report by Fitch Ratings agency on September 30, 2011, said that the upsurge of shale gas exploration and production in the United States continues to bring significant cost advantages to North American bulk chemicals. The agency said it is expected to be cheap