A – B – C

3M
AFC
Allied Conduit
Allied Moulded
Anamet
Appleton
Arlington
Belden
Berko
Bodine
Brady
Broan-Nutone
Burndy
Cal Conduit
Cerro
Chromalox
Coleman Cable
Columbia Lighting
Conduit Pipe Products
Cooper Lighting
Cree Lighting

D – E – F

Diode LED
Dottie
Dual-Lite
Edwards
Emergi-lite
Encore
Erico
Excel
Ferraz Mersen
Fluke
Functional Devices

G – H – I

Gardco
GE Lighting
General Cable
Grace Eng. Products
Halo
Hoffman
Holophane
Honeywell
Honeywell Generators
Houston Wire & Cable
Hubbell Building Automation
Hubbell Lighting
Hubbell Wiring
Iboco
ICM
Intermatic

J – K – L – M

Jan Fan
Juno
Ketra
Kichler
Kidde Safety
Killark
Kim
King Wire
Klein Tools
LEDVANCE
Leviton
Lithonia Lighting
Lumark
Lumenpulse
Lutron
MAX USA CORP 
MaxLite
McGill
Meltric
Milbank
Mono-Systems
MP Husky

N – O – P – Q

Neer
Nicor
NSI Industries
Nutone
O.Z. Gedney
Okonite
Oldcastle
Omni Cable
Pfannenberg
Phoenix
Power-Strut
Prescolite Lighting
Priority Wire
Progress Lighting
Q Mark
RAB Lighting
Raco/Bell
Ramco Innovations
Raychem

R – S – T

Rayovac
Rectorseal
Republic Conduit
Ronk
Salisbury
Satco
Sea Gull Lighting
Selecta Switch
Service Wire
Siemans
Southwire
Square D
Sylvania
Synertech
Teddico
T.J. Cope
Telemecanique

U – V – W

United Wire
Ushio
Wago
Williams Lighting
Wiremold
World Dryers