Companies

• NEI Advanced Composite Technology (NEI, Inc.)

• Nervastral LLC

• Neste Thermo

• Neverleak Company

• Overly Manufacturing Co., Inc.

• Polyguard Products, Inc.

• Polytite Mfg. Corp., Dur-O-Wal

• Portals Plus, Inc.

• Pro-Seal Products

• Progress Unlimited, Inc.

• Protecto Wrap Company

• R. H. Tamlyn & Sons

• RPS Corporation

• Sandell Manufacturing

• Sealoflex, Inc.

• Spar-Marathon Roofing Supplies

• St. Angelo Hardwoods, Inc.

• Talbot Roofing

• Tamko Roofing Products

• Thaler Metal Industries Inc.

• Thaler Metal Industries Inc.

• Tuff-Kote Co.

• US Intec, a divison of BMCA

• Urecoats Industries Inc.

• VP Buildings, Inc.

• W.R. Grace & Co.