I found this interesting.
China can make it perfectly. But when cost, not quality, is king this is what you get.
https://www.facebook.com/reel/7218626188257554
Another one on YouTube for the Sloppy Copy.
China Sloppy Copy, is it Junk?? (sloppy stage2 camshaft)
https://www.youtube.com/watch?v=PhyVb0dFK5c