根据普氏全球石化指数（PlattsGlobalPetrochemical），11月石化产品价格跌至一年多来最低水平，平均每吨1162美元，较今年5月的峰值水平下跌25%。
Prices for petrochemicals in November hit their lowest levels in more than a year , according to the Platts Global Petrochemical index , averaging $ 1,162 a tonne , down 25 per cent from their May peak .
普氏指数