Since its founding in Defiance, Ohio, in 1970, Koester Corporation has grown into a 50-employee manufacturer known for keeping engineering and production work in-house. The company now operates from a 62,400-square-foot facility in Napoleon, where it develops industrial control systems and custom mechanical solutions for manufacturers. Koester’s project managers stay with customers from estimating through shipping, giving each job a consistent point of contact.
UL 508A
certification
UL 698A
certification
Registered Professional Engineering Firm
registration