Stepan company is one of the largest merchant manufacturer of aromatic polyester polyols and the leading merchant manufacturer of surfactants globally while jpc is a famous company in chemical industry 美国斯泰潘是全球最大的芳香族聚酯多元醇厂家之一,同时也是占领导地位的表面活性剂的生产与销售商;金陵公司中国石化下属杰出公司。