Cable manufacturers?

So, cable manufacturers (designers and assemblers) must be alchemist? Can't tell if your post is humor. I hope so.

Dave

"Anyone have any actual Information?"

OP, what are you planning to do with this info?

To answer your query, I believe Acrolink and Oyaide manufacture their own wire (conductor). 

Cardas either makes his, or has it made for him. Lots of other companies buy their wire from him, including Audio Advisor/Pangea.

The only question in my mind is who the heck makes eight 9s copper wire and who makes the long crystal wire or single crystal wire? Oh, and which country has the best sounding copper?

I don’t think it is possible to make 8 9’s copper or 8 9’s purity in anything.

But I’m ready to be wrong about that.

the OCC processes, is, IIRC... used for making the physically longest known and 'commercially realized' single crystals in copper wire.

Which country has the best sounding copper is probably debatable.

Considering the exactness of the process for OCC (Ohno Continuous Cast)(Dr. Atsumi Ohno) , and it’s origins in Japan, it might be that Japan has the best sounding copper. Not all OCC copper is created equal.