| nomma.org | National Ornamental & Miscellaneous Metals Association |
| nfpa.org | National Fire Protection Association |
| ncsbcs.org | National Conference of States on Building Codes and Standards |
| nawic.org | National Association of Women in Construction |
| nam.org | The National Association of Manufacturers |
| nace.org | NACE International |
| mbma.com | Metal Building Manufacturers Association |
| manaonline.org | Manufacturers Agents National Association |
| alarm.org | The National Burglar & Fire Alarm Association - NBFAA |
| marble-institute.com | Marble Institute of America |
United States , Illinois , Chicago