• Liberty Excavators, Inc.

• Lochinvar Corp.

• M.P.C. Containment Systems

• McClure Company, Inc.

• Mekco Mfg.

• Michael Gaertner & Associates

• Moen Inc.

• Mueller: Paul Mueller Co.

• National Seal Co.

• Neptune-Benson

• Nova Fabricating

• Nutone Electrical Ltd.

• O'Connor Tanks Ltd.

• Obermeyer Hydro

• Ocean Steel

• Orion Fittings

• PWCampbell

• Patterson Kelley Co.

• Perlite Institute

• Peter Pepper Products, Inc.

• Pinnacle Design and Consulting

• Plasite

• Plastronics

• Powrmatic of Canada Ltd.

• Precast Specialties Corp.

• Precision Boilers