• DuPont Tyvek Weatherization Systems

• Eljen Corporation

• Euclid Chemical Company

• Fields Company LLC

• Foam Enterprises Inc.

• Fosroc, Inc.

• Fox Industries, Inc.

• Gardner-Gibson, Inc.

• Gemite Products Inc.

• Gorilla Proof

• Grace Construction Products

• Hal Industries Inc.

• Husky Oil Marketing Company

• Iko Industries Ltd.

• Ink Smith Inc.

• JDR Enterprises

• Karnak Corporation

• Koch Waterproofing Solutions, Inc.

• Koppers Industries, Inc.

• L & M Construction Chemicals, Inc.

• LBI Technologies, Inc.

• Lambert Corporation of Florida, Inc.

• Macklanburg-Duncan

• Mapei Inc.

• Metacrylics

• Metalcrete Industries