Many european string brands are not available on this side of the pond.
Be also aware that unknown strings are sometimes unknown for some reason...
And they seem quite expensive too.
The Presto string is more known in Europe.
http://www.presto-strings.com/
The nylon wound type is sold under the Eurosonic brand here in North America.
The Innovation (UK made) strings are also well known here.
http://www.innovationstrings.com/
My advice is: stay away from obscure, unknown products...