You would think this is some kind of top secret. It took some digging, but we found that Lotos plasma cutters are made in China. There are a couple of internal components that they outsource from Japan and Germany. The mosfets circuit is made in Japan (Fuji or Toshiba). And for IGBT components, they are made by Siemens Germany. All other components are manufactured in China and assembled there.
The major distributor in the U.S. for Lotos is Lotos Technology based in Sunnyvale California. Their phone is 408-739-2329. If you need support for a Lotos plasma cutter you can email them at: firstname.lastname@example.org