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After obtaining his Ph.D. in chemistry at the University of Amsterdam, Dr. Koster worked from 2000-2011 at DSM and Sabic in the petrochemical industry in varying roles in R&D, market intelligence and commercial departments. He was commercial manager for SABIC in Europe for C4 products, benzene and derivatives, and heavy aromatics. His last role at Sabic was global market intelligence lead for PP (polypropylene). In 2011, he joined CMAI (now IHS Markit) as the consultant for PE and PP, before switching to the C4 & Elastomers lead role for EMEA in 2017. Dr. Koster leads the global tire type indices service, is a main contributor to the global C4 olefins & elastomers report, several world analysis services and is a frequent speaker at conferences. He is an expert in steam cracker products and various polymers and elastomer markets.