Montevideo Corporate Offices for Ritalka, RVI and SpecSys 121 North 1st StreetMontevideo, MN 56265 Granite Falls SpecSys Manufacturing 1123 Highway 212 WGranite Falls, MN 56241 New Ulm SpecSys Manufacturing 2120 Broadway Street NNew Ulm, MN 56073 Cloquet SpecSys Sales and Engineering; Integral dx 1111 Cloquet AvenueCloquet, MN 55720 Prentice SpecSys Manufacturing, Engineering, Project Management and Purchasing 474 Birch StreetPrentice, WI 5... Watertown RVI and SpecSys Manufacturing 600 Quadee DriveWatertown, SD 57201 Redwood Falls RVI Service 304 Industrial DriveRedwood Falls, MN 56283