Profile: Denver Sign Supply Co., Inc. delivers plotter cutters and application tapes. Our electrical products include ballasts, electrical tapes, fluorescent tubes, photocell, sockets, transformers and transformer boxes. Our flexible magnetic sheeting is designed to produce holding power on metallic surfaces. We offer vinyl, adhesive and paper laminates as well as custom fabrication. We also provide drill screws, grommets, metal screws, pop rivets and brackets.