Updates, Product Information, and Events for GT Reps. A Manufacturers Rep Firm for the states of Ohio, Michigan, Indiana, Kentucky, Western Pennsylvania, and West Virginia. GT Reps is proud to represent the following manufacturers: Hitachi Cable America, Signamax, Advanced Cable Ties, Brother Labelers, Basor Cable Tray, NetSource Cable Assemblies, Multilink OSP, Hammond Racks and Cabinets, Gai-Tronics Emergency Phones, and ArecontVision Security Cameras.