• A. B. Chance Co.

• ACTRON Inc.

• Adra Electric Products

• Allied Tube & Conduit

• Allmand Bros. Inc.

• Allotech

• Allstate Sign & Plaque

• Americraft Co., Inc.

• Ameron International Corp.

• Associated Products Services Inc.

• Atlas Flasher & Supply Co.

• B&B Roadway Security Solutions

• Barco Leds sac

• Bender

• Big Beam Emergency Systems

• C.W. Cole & Co.

• Carlton Industries Inc.

• Carmanah Technologies

• Chesney Morales & Associates, Inc.

• Crescent Electric Supply Co.

• Crouse-Hinds Div.

• DW Dots

• Davidson Traffic Control Products

• Design Group

• Diskey Architectural Sign

• Douglas Steel Fabricating Corporation

• Dunn & Associates, P.A.

• Duro-Test Lighting

• ECCO Electronic Controls Company

• EMED Co.

• Eagle Bridge Machine & Tool, Inc.

• Edwards Signals

• Faraday

• Federal Signal Corp/Electrical Products

• Flagpoles, Inc.

• Geisler Roofing Inc.

• George Butler Associates, Inc.

• Global Industrial

• Gold Coast Light

• H-B Instrument Co.

• Hall Signs

• Howard Industries, Inc.

• INNERFACE SIGN SYSTEMS, INC.

• International Plastics Machinery Corp.

• Intersection Development Corp.

• J W I

• John Portman & Associates

• Kaltech Architectural Signage

• LUMIRON

• Lake Shore Industries

• Ledalite Architectural Products Inc.

• Louis & Henry Group

• Lytle Signs

• MDI

• McDermott: Julian A. McDermott Corp.

• Mule Lighting

• Natale Machine & Tool Co., Inc. (CIRCLE D LIGHTS)

• Niland Company

• Norfield Corp.

• OSRAM SYLVANIA INC.

• Pauluhn Electric Mfg. LLP

• Pelco Products

• Permanize Signs

• Philips Lighting Co.

• Pittsburgh Manufacture & Installers

• Precision Multiple Controls

• Sonco Worldwide

• South Chester Iron Works

• Sparkle Plenty

• Spring City Electrical Mfg. Co.

• Stokes Electric Company

• TRI LIGHT INC.

• Territo Electric, Inc.

• The Roupp Group, Inc.

• Thomas & Betts Electrical

• Torbeck Industries

• Tork

• Traffic Safety Co.

• Traffix Devices

• Trans-Lux Ltd.

• Tri-Guards

• Tristate & Electric & Electronics Supply Co.

• Trojan, Inc.

• Ushio America

• Visco

• Von Kohorn & Kitzmiller Signmakers

• Ward Industries

• Webco Lighting

• Wheeler Consolidated

• Whelen Engineering Company, Inc.