Phil Cardinale bought DT from Storm a while back, 5-7 years ago, I believe. Around the time of the original Element and Vendetta, I think. Storm continued to manufacture DT equipment. Then Columbia made DT in some nebulous merger/manufacturing deal that only three or four people really understand. Then Ebonite bought Columbia and got the Dynothane name in the deal.
With four brands, two of which are Big Four names, there just isn't room to have a fifth brand in the US, so DT was made an overseas brand. I don't know where manufacturing for DT equipment is, probably in Hopkinsville, KY with the rest of the Ebonite brands. I suppose they could contract it to overseas manufacturers since the balls are going overseas anyway, but I really don't know.
SH