| Country | Association | Website |
| Austria | AOT | www.arge-ot.at |
| Belgium | Nickel Institute | www.nickelinstitute.org/ |
| Belgium | VOM vzw/asbl | www.vom.be |
| Germany | FIT | www.fit-online.org |
| Finland | SGY | www.sgy-ry.fi/ |
| France | UITS | www.uits-france.com |
| France | ICDA | www.icdacr.com |
| Germany | SGO-SST | www.sgo-sst.ch/ |
| Germany | VECCO e.V. | www.vecco.de |
| Germany | ZVO | www.zvo.org |
| Switzerland | SSO | www.sso-fsts.ch |
| Italy | AssICC | www.assicconline.it |
| Italy | ASSOGALVANICA | www.assogalvanica.it |
| Netherlands | Vereniging ION | www.vereniging-ion.nl |
| Norway | NGLF | www.nglf.no |
| Spain | AIAS | www.aias.es |
| Sweden | SYF | www.syf.se |
| UK | SEA | www.sea.org.uk |
