| Aviation & Navigation | CRC | R. Stahl | Lighting Fixtures | Pyle National |
| Grouse-Hinds Co. | WD40 | Thomas & Betts | Appleton | |
| Tideland Signal | Vynckier | Big Beam | Splice Kits | |
| Conduit | Chalmit | 3M Electrical | ||
| Ballasts | Alflex-Liquidtight | Fuses | Cooper Lighting | Tyco |
| Advance | Allied-Rigid & EMT | Bussman | Grouse-Hinds | |
| Bodine | Anamet-Liquidtight | Ferraz Shawmut | Dual-Lite | Starters |
| Osram Sylvania | Cantex-PVC | Littlefuse | Edwards | Appleton Electric |
| Universal Lighting | Carlon-PVC | Exide | Grouse-Hinds | |
| Champion-Fiberglass | Grounding Equip. | General Electric | Cutler-Hammer | |
| Boxes | Electri-Flex | FCI Burndy | Genlyte Group | General Electric |
| Adalet | Indalex- Aluminum | Cadweld | Hubbell Lighting | |
| Appleton | Ocal-PVC Coated | Erico | Holophane | Tape |
| B-Line | Robroy | Homac | Lithonia | 3M Electrical |
| Grouse-Hinds Co. | Sea-Safe-Fiberglass | Penn-Union | Light Alarms | Plymouth Rubber |
| Hoffman Engineering | Robroy-PVC Coated | Thermo-Weld | NRL | |
| O-Z/Gedney | Wheatland Tube Co. | Thomas & Betts | Mercury | Terminal Blocks |
| Raco | Pauluhn | Buchanan | ||
| Thomas & Betts | Conduit Fittings | Hazardous location | Rig-A-Lite | Cutler-Hammer |
| Appleton | Adalet | Snelson | Ideal | |
| Cable Glands | Arlington | Akron | Marathon | |
| Appleton | Cantex | Appleton | Marine Equipment | Phoenix |
| ATX | Carlon | ATX | Grouse-Hinds Molded | Waco |
| Grouse-Hinds | Crouse-Hind Co. | Ceag | Daniel Woodhead | Weidmuller |
| Hawke | CPP | Chalmit | Hubbell Wiring Devices | |
| Killark | Grouse-Hinds | ESL Power Systems | Tools & Instruments | |
| Cable Markers | Neer | General Electric | Russellstoll/Mipco | Amprobe |
| Brady | Picoma | Holophane | Gardner-Bender | |
| Ideal | Red Dot | Hubbell | Marking Systems | Dewalt Industrial |
| Panduit | Regal Mfg. Co. | Killark | 3M | Fluke |
| Shamrock | NRL | Brady | Greenlee | |
| Cable. Wire & Cords | Thomas & Betts | O-Z/Gedney | Ideal | Ideal Industries |
| Aetna Insulated Wire | Wheatland Tube | Pauluhn Industries | Panduit | Klein Tools |
| AIW | Rig-A-Lite | Thomas & Betts | Milwaukee Electric | |
| Belden | Connectors | R. Stahl | Panduit | |
| Draca | FCI Burndy | Motors | Rigid | |
| General Cable | Ideal Industries | Heat tracing | ABB | Simpson |
| Okonite | Homac | Nelson | Baldor | Snap On |
| Rockbestos | Panduit | Thermon | Brook Crompton | |
| Shawflex | Penn-Union | Tyco Thermal | Franklin Electric | Transformers |
| General Electric | ABBT&D | |||
| Cable Tray | Distribution | Horns & Beacons | Marathon | Acme Transformer |
| B-Line | ABB T & D | Grouse-Hinds Co. | Teco-Westinghouse | Areva T & D |
| Chalfant | Areva T & D | Edwards Co. | Cooper Power | |
| Champion | Cooper Power | Federal Signal | Motor Control Centers | General Electric |
| Cope | Cutler-Hammer | Pauluhn Industries | Cutler-Hammer | Jefferson |
| Tex-tray | General Electric | Siemens | Olsun | |
| Intercom Systems | Sola/Heavy Duty | |||
| Channel & Raceway | Enclosures | Gaitronics/Hubbell | Plugs & Connectors | Todd Systems |
| B-Line | Adalet | Hose McCann | Appleton | |
| Champion | Akron | Ideal | Bryant | Wiring Devices |
| Cope | Appleton | Grouse-Hinds Co. | Bryant | |
| Tex-Tray | B-Line | Lamps | Cooper Wiring Devices | Cooper Wiring Devices |
| Thomas & Betts | Grouse-Hinds Co. | Eye Lighting | Daniel Woodhead | Hubbell Wiring Devices |
| Hoffman | General electric | Hubbell Wiring Devices | Legrande | |
| Chemicals-cleaners | Killark | Philips | Leviton | Leviton |
| Calfonex | Rittal | Sylvania | McGill | Pass & Seymour |
| Pass & Seymour |
