Hello from the UK
Suppliers in Europe - try British-based companies for tools : Sutton
Tools in Birmingham, HS Walsh & Sons and Cookson Precious Metals.
The patterned wire and gallery strip you mention - I believe that
Bellore bought an entire manufacturing system, and they claim to
have the largest selection of gallery strip available. They also have
a wide range of findings and other supplies.
Rashbel in London are also a useful source
All of these can be found on the web.