Oddly, they do actually have copyright legislation. They just routinely ignore it. I had a few useful products, then tried to order more and they had crossed a line, breaking one of their own laws. Our frequencies in the UK happen to be used by their military. The factory was banned from producing any more.
If anyone supplies the factory in china with a CNC file, its not considered private. Same with injection moulding. If the manufacturer makes 1000 products for a customer, and another customer wants the same thing, they make them. Motorola and Icom, both companies based in other countries have products made in china. Once the models are discontinued, they expect the plants to stop making them. They dont, or at least, they keep the tooling. Remember those radios that blew up some bad guys? The manufacturers could not tell if they were genuine old ones, or unofficial ones that sell on aliexpress. They got called counterfeit, or fakes, but they are 100% the same product, just being sold direct from the factory who have all the parts. The resl manufacturers struggle to justify ‘fake’, the best is perhaps ‘unauthorised’. Having both, i can actually tell the difference. The colour of the plastic has a slightly different colour, but you need an original to tell!