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Mark Ellis is an experienced technical and sales professional with a career spanning over 18 years in the chemical and oil industries. Currently serving as a Technical Manager at Dorf Ketal since February 2023, Mark previously held the position of Sales/BD Manager at Halliburton from March 2021 to February 2023. Mark's extensive experience at Nalco Champion, an Ecolab Company, includes roles such as Group Leader in Production Maximization and Technical Manager for Kazakhstan, among others. Prior to these positions, Mark worked as a Development/Field Chemist at Roemex LTD. Mark holds a BSc in Chemistry from the University of Aberdeen, completed in 2004, and studied at North East Scotland College in 1999-2000.