Economy Manufacturing makes up a significant proportion of area industry and employment; in the 2010 census, 3075 county residents (13.4%) were employed in manufacturing. Circleville is home to the largest DuPont chemical plant in Ohio. Opened in the 1950s, it produces Mylar and Tedlar plastic films, the latter used extensively in the production of photovoltaic modules. PACCAR, a Seattle-based truck manufacturing company, has maintained a large factory for over 35 years.
ecONomy manufActuRiNg maKes UP a sigNifiCANt PropoRTiOn Of areA indusTry And employment; in the 2010 cEnsUs, 3075 cOuNtY rEsIDents (13.4%) WEre employed In mANufaCtUrING. CirCleVilLe is HOme TO tHe laRgest DUpOnt ChemIcaL PlanT In ohio. oPENed in tHE 1950S, It produces mYLaR anD teDlAR PlasTic Films, thE latTEr uSEd eXteNsiveLy iN thE prodUcTion oF phoToVoltaIc modUles. paccar, a seattlE-bAsed TrucK MAnufACTuRing cOmpany, has mainTaIned a LARge fAcToRy for OveR 35 years.