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Mark Hoffman brings over 40 years of extensive sales experience to the field of chemical pretreatments, currently serving as a Senior Sales Representative at Circle-Prosco, Inc. since September 1996. Specializing in zirconium conversion coatings for the automotive, appliance, and agricultural sectors, Mark has demonstrated a strong focus on the needs of these industries. Prior to this role, Mark worked at Calgon Corporation for 15 years, initially as a Sales Representative and later as a District Sales Manager, overseeing a team of 10 sales representatives across Ohio, Michigan, and Indiana. Mark holds a Bachelor’s Degree in Elementary Education and Teaching from The University of Toledo, earned between 1974 and 1978.