• Abstracta

• Acoustic Systems

• AeroGo

• Amtab Mfg. Co.

• Atlas Sound

• Automatic Devices Co.

• Auton Motorized Systems

• Autotatch

• BGW Systems

• Beta Max Hoists, Inc.

• Bil-Jax

• Bosch Security Systems, Inc.

• COMTEK

• Channel Vision Technology

• Chicago Marble Co.

• Conwed Designscape

• Da-Lite

• David Clark Co.

• Design Line

• ESS/Olesen

• ETA Systems

• Fiberoptic Lighting

• Fraco Products Ltd.

• Garner Holt Productions

• H & H Specialties

• HM Electronics

• Hoffend & Sons, Inc.

• Holabird & Root LLP

• Industrial Acoustics Co.

• J. R. Clancy

• Landow and Landow

• Lawrence Metal Products, Inc.

• Littlite/CAE

• Lycian Stage Lighting

• Macton Corporation

• Makita USA

• New York Fire-Shield

• Northwest Studios

• Pass & Seymour/Legrand

• Perdue Acoustic Mfg.

• Pittsburgh Stage

• Quality Stage Drapery Ltd.

• SECOA

• Scamp Sound Masking Systems

• Silent Gliss USA

• Snipes: Kenneth Snipes Fabrication/Design

• StageRight Corporation

• Stagecraft Industries

• Staging Concepts, Inc.

• Starlite

• Swiss Fabricating, Inc.

• TOA Electronics

• TRI LIGHT INC.

• Theatrical Lighting Systems, Inc.

• Thern Incorporated

• Tomcat USA

• Tru Roll

• Union Connector Co.

• United Stage Equipment

• Vantage Lighting, Inc.

• Wallace Construction Specialties

• Wenger Corporation, USA

• Zip Tube Systems