| ansi.org | American National Standards Institute |
| cenelec.org | European Committee for Electrotechnical Standardization (CENELEC) |
| netaworld.org | InterNational Electrical Testing Association (NETA) |
| nema.org | National Electrical Manufacturers Association |
| iso.ch | ISO. International Organization for Standardization |
| etsi.org | European Telecommunications Standards Institute (ETSI) |
| cenorm.be | The European Committee for Standardization (CEN) |
| astm.org | ASTM International |
| copant.org | Pan American Standards Commission (COPANT) |
| compliance-club.com | Nutwood UK Ltd. |
| cenelec.be | www.cenelec.be/ |
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