Gregory Welteroth Advertising (GWA) is a privatelyheld advertising and media buying agency that specializes in cooperative, retailerbased programs and national branding campaigns. Located in central Pennsylvania, GWA has spent the past 25 years working with national and international brands to create marketing programs that increase sales and brand awareness. GWA currently represents brands such as Bosch®, Siemens®, Thermador®, Cub Cadet®, Kubota®, STIHL®, Champion®, and Honda® Power Equipment.