一年半之前,美国的石化业制造商还在为自己的生产成本明显比日韩低,竞争优势大大领先而沾沾自喜的时候,现在却为原料成本的居高不下而愁眉苦脸,遥想当年PE(聚乙烯)制造商的成本只有日韩生产商的50%,商场之战稳坐钓鱼台,现在却为原料优势的丧失怠尽而举步为艰,是什么原因使局面发生了如此大的变化,我们认为美国能源政策的改变是其变化的主要原因,美国政府根据《京都议定 A year and a half ago, when the petrochemical manufacturers in the United States were still making their own production costs significantly lower than those of Japan and South Korea, and they were complacent about their competitive advantage, they are now scowling for the high cost of raw materials. The cost of the ethylene) manufacturer is only 50% of that of Japanese and Korean producers. The battle for shopping malls is stable at Diaoyutai. Now it is difficult for the loss of raw material advantages. What makes the situation so much changed? We believe that Changes in U.S. energy policy are the main reason for its change. The U.S. government has agreed on Kyoto