• Murray Sheet Metal Co.

• N-E-D Corp.

• Newborn Brothers Co.

• Northrock Industries

• Nox-Crete Products Group

• Oztec Industries

• PFT of America

• Pahl Pahl Pahl PC

• Pearl Abrasive Co.

• Penoco Inc.

• Petersen Precast Concrete Products

• Pittsburgh Glass Block Company

• Preach Masonry

• Prime Resins

• Pro-Seal Products

• Quikrete Companies

• REED Mfg. Co

• Rain Jet Fountain

• Reef Industries, Inc.

• Rock-Tred Corp

• SASE Company

• SDS Non-Destructive Testing

• SONIN, Inc.

• Sanders Saws

• Scalise Industries

• Schuff International