There was never a plant in China;
The company moved from FLA to NYC because no one involved in the company is in Florida - previously, Hunt & Douglas both had residences there. Hunt's dead and I hope CJ Douglas, too has met his karma in hell;
There has never been a plant in India.
The device in OK is the first ever commercialized prototype. The only other prototype, was a table top version, designed specifically for the original patented process. It was about 6' long and lay horizontally.