> AMERICAN ARCHITECTURAL METAL MANUFACTURERS, INC. Pennsylvania Since: 1998 AMERICAN ARCHITECTURAL METAL MANUFACTURERS, INC.
> MCHUGH RAILROAD MAINTENANCE EQUIPMENT, INC. Pennsylvania Since: 1985 MCHUGH RAILROAD MAINTENANCE EQUIPMENT, INC.
> KUTZNER MANUFACTURING INDUSTRIES, INC. Pennsylvania Since: 2014 KUTZNER MANUFACTURING INDUSTRIES, INC.
