• Crossfield Products Corp.

• Crossfield Products Corp. Dex-O-Tex Division

• Custom Building Products

• DLR Group

• Dampney Company Inc.

• Daubert Chemical Co.

• Davis Associates

• Davis-Frost

• Davlin Coatings

• Dayton Superior Corporation

• Delta Polymers

• Dex-O-Tex

• Dow Chemical

• Dow Corning Inc.

• DriTherm, Inc.

• Dryvit Systems, Inc.

• DuPont Industrial Coatings

• DuPont Surfaces

• Dudick

• Dufresne-Henry

• Duncan Galvanizing

• Duochem

• Duochem Inc.

• Dur-A-Flex, Inc.

• Durock Alfacing International Limited

• Duron Inc.