mclinnguy,
Yes all those companies that you mentioned all get their OCC single crystal wire from Neotech in Taiwan and the reason for that is that Neotech was one of only three companies that were licensed to make OCC single crystal wire and they produced it for many other companies out there like the ones you mentioned and even more, and even better than the round OCC is the rectangular OCC which I upgraded to from the round OCC and I can tell you in every instance whether it was speaker wire interconnects or power cords everything improved audibly where there was no question that it was better you could hear the difference very clearly