Well he said apparently the local companies couldn't be bothered to quote, or took too long. He sent a stp file to a chinese company late afternoon, had a quote in his inbox the next morning. 3 weeks delivery ARO to his shop. Very good price. And the quality was excellent as well. Without drawings expressing tolerances etc they managed to make parts right on the money.
What people are not aware of is, there's a huge variety of everything in China. There's a bunch of idiots pounding on shit with rocks, and there's guys with the latest grooviest stuff and kids who are pretty sharp. Of course the guys who pound on pressed dogshit with rocks don't say so, all websites claim the same thing
Maybe not as much now, since there's a lot less shops, but that was true in the US too. There were good heat treaters and bad heat traters, jerk shops and good ones. But it's a lot easier to figure out which you are dealing with when they are an hour's drive away, and speak english.