• A-C Lighting Security

• AMP

• American Steel Buildings

• Area Lighting Research

• Automatic Switch Co.

• Building Service, Incorporated

• Challenger Electrical Equipment Corp.

• Chomerics

• Cooper Power Systems

• Crescent Electric Supply Co.

• Current Technology

• Delta Technology

• ELK Products

• ERICO

• ETA Engineering

• Executive Information Systems

• Framatome Connectors International

• Geist Manufacturing, Inc.

• H-B Instrument Co.

• Harger Lightning Protection

• Heary Bros Lightning Protection Co.

• Howland Electric and Electronics Wholesale Company

• Indus-Tool

• International Chimney Corp.

• L.E.A. International

• Lightning Protection Institute

• Lyncole Industries, Inc.

• MCG Electronics

• Niland Company

• Panamax

• Paraflex Industries

• Pass & Seymour/Legrand

• PolyPhaser Corp.

• Power & Systems Innovations

• Power Integrity Corp.

• Robbins Lightning Inc.

• Shape Electronics

• Square D Groupe Schneider

• Superior GRounding Systems

• Thomas & Betts Electrical

• Transtector Systems

• Tripp Lite

• Tristate & Electric & Electronics Supply Co.

• Trojan, Inc.

• Tytewadd Power Filters