• Neenah Foundry Co.

• Northwest Culvert

• Parton Lumber Company

• Prosec Inc.

• Quick Crete Products Corp.

• Rolatape Corp.

• SANKO FASTEM USA

• SEPCO- Solar Electric Power Company

• Security Fabricators

• SelecTech, Inc.

• Smith-Midland Corporation

• Stampcrete International Ltd.

• The Parking Block Store

• Vestil Mfg. Co.

• Webco Lighting

• Wilson Concrete Products Co.