随着原料价格上涨，除聚酯及丙烯腈外，主要合纤原料的毛利水平有所好转。
As prices of raw materials uprising, margins of main synthetic fiber materials recovered except polyester and acrylonitrile.
文章从技术经济角度就近10年以来聚酯原料和产品价格之间的相互关系、变化情况进行了数据回归分析和说明。
To introduce the relationship on prices of polyester products chain in the past 10 years from techno-economic point of view.
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