Joseph Adelegan Secretary General and Executive Head International Rubber Study Group

Professor Adelegan is the Secretary-General of the International Rubber Study Group (IRSG) based in Singapore, the biggest worldwide community in the Rubber Industry. He is a C-Suite Executive and an international development expert, Professor of Environmental Science and Engineering and a practitioner-scholar in management with over three decades of distinguished professional trajectory across Africa, Europe, North America, and Asia. His work experience includes: the United Nations, development finance institutions, international organizations, education, research, and innovation among others. He has extensive experience in the sustainable investment, disruptive innovation, and circular economy of the elastomer products. He is in high demand as a regular speaker at international conferences. He has travelled to over 138 countries. Professor Adelegan earned Two Doctorate Degrees, Doctor of Business Administration (DBA) from the Case Western Reserve University, Cleveland, Ohio, United States and Doctor of Philosophy (PhD) Civil and Environmental Engineering from the Nigerian Premier University of Ibadan.

Weixuan He Senior Research Analyst, C4s & Elastomers Dow Jones Energy

Weixuan He is a Senior Research Analyst of C4 Olefins and Elastomers team at Chemical Market Analytics, part of Dow Jones Energy. Weixuan He is based in Beijing, China. She is currently working on the C4 Olefins and Elastomers market in mainland China. She is the co-author of the Global C4 Olefins and Elastomers Monthly report and the Asia Weekly report. Prior to this role, she joined the legacy IHS Markit in 2018 as a research analyst in the ChemAssets team as part of the Same Day Info&Analysis division. Weixuan graduated from Tufts University in Psychology and Community Health and studied in the Master program at University of Michigan, majored in Biostatistics.

Bill Hyde Executive Director - Head of Olefins Dow Jones Energy

Bill Hyde is the Executive Director - Head of Olefins, Dow Jones Energy.

Mr. Hyde is a part of Dow Jones Energy where he leads the Global Olefins Practice.  He has consulted in the Olefins markets since 2002.  Hyde began his career with the Union Carbide Corporation in 1990 where he held various positions including production engineering, optimization, planning, and logistics.  In 2000, he joined Texas Petrochemicals as a Business Analyst.  In 2002, Hyde joined CMAI in the Olefins Consulting Practice, focusing on C₄ Olefins and rubber, and assumed responsibility for that practice in 2006.  CMAI was sold to IHS in 2011 and later became IHS Markit.  The Base Chemicals Group of IHS Markit, which includes the C4 Olefins and Elastomers Practice, was divested to News Corp in June 2022 eventually becoming Dow Jones Energy.  In 2026 Hyde became the leader of the Dow Jones Energy Olefins team.

Hyde has B.S. and M.S. Degrees in Chemical Engineering from Brigham Young University and an M.B.A. from Tulane University.

Zhengyi Jiang Head of Economics, Statistics, & Sustainability International Rubber Study Group

Dr. Jiang Zhengyi is the Head of Economics, Statistics, and Sustainability of the International Rubber Study Group (IRSG). He earned the Doctor of Science (Economics) from ETH Zurich in 2020 with research on Energy Economics. Dr Jiang worked with the SINOPEC Group in China where he worked on latest movements and strategies taken by major energy corporations and research on energy industry prospects with working papers on topics including ESG and digital transformation roadmap for SINOPEC’s businesses and using data simulation and forecast to pioneer a risk management framework covering SINOPEC’s operating risks. Dr. Jiang’s work focuses on commodity market analysis and has strong competence in data analytics, ESG and sustainability analysis, and financial modelling. He is experienced in market data gathering, processing, and analyzing, as well as drafting reports by identifying and illustrating market events.

Remko Koster Director, EMEA C4 Olefins Dow Jones Energy

Remko Koster is the Director for C4 olefins and derivatives in Europe, the Middle East and Africa at Chemical Market Analytics, part of Dow Jones Energy. During his time with the company, he has taken various roles across a broad range of product areas. With over 20 years of experience, Remko is a key resource within the business for understanding and insight into the C4 and derivatives sector of the petrochemical industry. Within the EMEA region, he works closely with the petrochemical, oil and tire industries, bringing support and guidance throughout the petrochemical chain. His current area of focus includes oversight of the ‘Global Tire Type Indices Report’, primary input and insight for the ‘Global C4 Olefins & Elastomers Report’, as well as for the World Butadiene, MTBE, Rubber, and Butylenes analyses. His prior experience includes more than ten years of industrial experience with SABIC, including commercial responsibilities for C4 streams and aromatics and as a global market intelligence leader for polypropylene. Remko joined our company in 2011 as a polyethylene and polypropylene consultant for EMEA, contributing to the ‘Global Plastics & Polymers Report service’ and for World Polyethylene and Polypropylene Analysis. Remko Koster has a Ph.D. in Chemistry from the University of Amsterdam, the Netherlands.

Dawn Leow Associate Director, Nylon Fiber and Feedstocks Chemical Market Analytics by OPIS

Dawn Leow is an Associate Director of Nylon Fibers & Feedstocks at Chemical Market Analytics Dawn Leow is the Associate Director for Nylon and Feedstocks at Chemical Market Analytics. Since joining the company in 2022, she has continued to develop and bring nuanced insights into the nylon value chain based on an integrated understanding of how current macroeconomic conditions and upstream crude oil and benzene sectors impact the supply and demand dynamics in the nylon sector. Based in Singapore, she maintains active discussions with key operators within the nylon chains in the Asian region to gain up-to-date insights into the trading sentiments and strategic objectives among market participants. She leads the weekly nylon report service and is also the Asian leader of nylon's monthly report and world analysis service. Before CMA, she worked for over 10 years in technical engineering roles, primarily within the biopharmaceutical manufacturing industry in the San Francisco Bay Area, specializing in capital project management, monitoring, and controls and new equipment introductions, installations, upgrades, commissioning, and qualifications. She also worked in roles involving scientific research and medical marketing intelligence. Her technical background has helped enrich the breadth and depth of her market analysis and advisory skills at CMA. Ms. Leow holds a bachelor's degree in chemical engineering from the University of California at Berkeley, a Master of Science in accountancy, and an MBA (focusing on data analytics) from the University of Illinois, Urbana Champaign.

Kevin Longworth Director, Global Acrylonitrile Dow Jones Energy

Kevin Longworth is the Director for Global Acrylonitrile at Chemical Market Analytics, part of Dow Jones Energy. Kevin Longworth is the director of the Global Acrylonitrile service and started his career at Chemical Market Analytics in 2009. During his time at the company, he has worked across various chemical value streams, giving him extensive exposure to a broad cross-section of the petrochemical industry. Before joining Chemical Market Analytics, he worked for nearly a decade as a process engineer in the plastics industry in South Africa and the United Kingdom. Mr. Longworth leads the Global Acrylonitrile service, providing industry players with strategic intelligence and analysis across this highly varied and complex value chain. Through regular engagement with industry stakeholders such as producers, downstream consumers, traders, distributors and investors, he helps them gain a deeper understanding of this volatile industry. The role is global, and he regularly contacts companies in Europe, the Americas, Southeast Asia and Northeast Asia. Prior to taking on his current role, he held several positions within Chemical Market Analytics, most recently as Director of Polyolefins for the EMEA region. In this role, he was responsible for developing intellectual property for the plastics service in Europe. He was a leading expert in this field, presenting at conferences and serving as the client-facing consultant for the Global Plastics service at Chemical Market Analytics in the EMEA region. Mr. Longworth has a degree in Plastics Processing Technology from the Cape Peninsula University of Technology in Cape Town, South Africa.  

Simon Neudeck Head of Commerical Activities Trillium Renewable Chemicals

Simon Neudeck is heading the commercial activities of Trillium Renewable Chemicals with the focus on raw material procurement and product marketing. He joined Trillium in the summer of 2022. Simon has been part of the chemical industry since 2004. He spent most of his career at a German chemical marketing company with over a decade in leadership roles. His experience ranges from the distribution of specialities to trading of commodity products. In recent years, Simon focused on decarbonization strategies and initiatives. Simon holds a bachelor´s degree in Business Administration and Foreign Trade

David Onyekpe Senior Research Analyst, Global Olefins Dow Jones Energy

David Onyekpe is a Senior research analyst in the Global Olefins group at Chemical Market Analytics. He is responsible for coverage of the acrylonitrile value chain and cotton.  Mr. Onyekpe has been with Chemical Market Analytics since 2016, where he has provided business information assisting clients in diverse projects. Prior to joining Chemical Market Analytics, David worked at the World Energy Council, where he assessed the impact of policies, in addition to opportunities and limitations that underpin some cross-cutting technologies within the energy Industry. He holds a Master’s degree in Chemical Engineering from University College London.

Ashish Pujari Executive Director, Head of Aromatics Dow Jones Energy

Ashish Pujari is the Executive Director, Head of Aromatics at Chemical Market Analytics, part of Dow Jones Energy.  Ashish has over 30 years of experience in the petrochemical industry, primarily focused on the polyester and raw material value chain, spanning project design, operations, sales & marketing, and business development. Over the past 15 years, he has focused on market research and consulting for the polyester and raw material industry. He is responsible for providing thought leadership to the sector and guiding our long-term forecasts. Ashish works with the Asian petrochemicals industry and coordinates support across the value chains. His current areas of focus are Paraxylene, terephthalic acid (PTA) and Polyester, covering the regional dynamics and guiding the global outlook. He also actively continues to focus on sustainability developments in the polyester sector. Ashish has also been instrumental in launching several reports, including the pricing reports for Aromatics in Asia and the Global Polyurethanes & Feedstock report. Ashish joined CMAI in 2009, with responsibility for covering the Asian PX and polyester markets, and has taken on additional responsibilities as we transition to Chemical Market Analytics. Before joining CMAI, Ashish worked for Reliance Industries Ltd. (RIL) in India and led M&A activity in the polyester sector at the time of his 2009 exit. Ashish joined RIL as a fresh engineer in 1994 in the project design and construction group and later progressed to operations. He also worked in sales & business development, becoming the regional sales lead for raw materials in North India. Ashish holds a Bachelor of Engineering (Polymers & Chemicals) from the University of Pune, India, and an Executive Management diploma from the Indian Institute of Management, Bangalore.