Metal Powder Producers Association (MPPA)
Metal Roofing Alliance
Metal Treating Institute (MTI)
Metals Service Center Institute (MSCI)
Minerals Information Institute (MII)
Minerals, Metals and Materials Society (TMS)
Mining and Metallurgical Society of America (MMSA)
National Assoc. of Architectural Metal Mfg's. (NAAMM)
National Association of Aluminum Distributors (NAAD)
National Association of Corrosion Engineers (NACE)
National Association of Metal Finishers (NAM)
National Association of Pipe Fabricators (NAPF)
National Association of Purchasing Management (NAPM)
National Association of State Procurement Officials (NASPO)
National Association of Steel Pipe Distributors (NASPD)
National Center for Excellence in Metalworking Technology
National Center for Manufacturing Sciences
National Coil Coaters Association (NCCA)
National Corrugated Steel Pipe Association (NCSPA)
National Electrical Manufacturers Association (NEMA)
National Institute for Metalworking Skills (NIMS)
National Institute of Governmental Purchasing (NIGP)
National Institute of Steel Detailing (NISD)
National Metal Decorators Association
National Metal Finishing Resource Center
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