• Hohmann & Barnard, Inc.

• Homasote Company

• Honey Brook Custom Cabinets Inc.

• Houck Specialty Contractors

• ITW Red Head

• International Plastics Machinery Corp.

• John L. Lowery & Associates

• Johnson Technologies

• K.C. Metal Products

• Kalesnikoff Lumber Company Limited

• Kelly Screedmatic Mfg. Inc.

• Kerrs Building Materials

• Kraft Tool Co.

• Kushlan Products,, LLC

• L. M. Scofield Company

• L.M. Scofield Co.

• Lancaster Threaded Products

• Larsen Products Corp.

• Loyalist Forest

• MGA Connectors

• MKT/Gunnebo Fastening Corp.

• Mapei Inc.

• Mar-Mac Wire

• Margia Floors

• Marion Brush Mfg.

• Marshalltown Company