kirkd.
You are making a hen house from a feather.
Parts are an international business. Resistors, transistors, IC-circuits, harddisk, LCD-displays, audio transformers and so on are manufactured and traded globally.
All of the Superlux catalogue seems to be "ripoffs" or blatant copies of other designs. Nothing original. This makes me believe that they are focusing on outside, not on inside. Sort of like fake Rolex watches. And to compare with those, some might actually work past the famous three step warranty. ( Once you have walked three steps away from the sales man the warranty is void ) .
There are a lot of fakes out there. According to what I hear in Europe every year a lot of fake Shure SM58 microphones are found. These are not made in the same factory as the the real thing, but they are so close in assemblance that it takes an expert to separate them. Very closely copied outside, box and broschure material. All made to fool the unwary. Some of them actually sound quite decent, making you wonder why they could not be sold under their own brand instead. Cudos to those factories that go under their own brands.
// Gunnar