There's good China, and there's bad China. Pay them peanuts and you'll get cloned peanuts in return. Pay them a decent amount and they'll make you a super high quality iPhone 7.
I notice Milltek have copied APR and gone with cast stainless for the turbo outlet and OEM style flex joints, which is great to see. I still wouldn't buy one. They are the most over rated exhausts I've ever had the displeasure of owning. Very average quality thin walled tubing and the silencer carcasses aren't much to shout about either. Milltek are great at stepping up the quality for a certain market that generates them more income though. VRS scene, not as big as the ST scene, for example.