ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades Where can I buy plugs to fit these three phase sockets?

Google told me that there is a "Martin Lunel" enterprise producing electric equipment here:
http://office.tourismeguise.free.fr/pages/lunel.htm

There are some other hints to this connection and telling that ML produces sockets/plugs within Legrand but I did not find any related ML websites and I have no access to the French online catalogue.