Lots of refurbished units on the inexpensive market. Who originally manufactured the units and are they still being made?

Not sure about refurbished, since those that do professional units call and consider these "throw away" units since normally it is not worth fixing them.

They are imported from my understanding, but the company that "Makes" them in the US is OWT Industries, Po Box 35, Highway 65 , Pickens SC 877-677-3501