Filter by City Brunswick Chippewa Lake Creston Hinckley Litchfield Lodi Medina Seville Valley City Wadsworth Go back to directory. Add to Address Book. Koster Crop Tester Inc Koster Crop Tester Inc Main 3077 Nationwide Pkwy Brunswick Ohio 44212 home Main: (330) 220-2116home Website: Visit Website Categories: Brunswick, Manufacturer Updated 2 years ago.