We sent nearly all production to China because we insist on lowest prices (the walmarts syndrome). The problem is when the big OEM facility or contract with China gets pirated and parts run by lesser quality makers and sold direct. It's rather amusing sometimes the parts they throw together in these mail-order packages.
The cost of being cheap, is getting cheap stuff. Hope it all works great, but some of it won't and that's when you kiss them dollars goodbye, and try to find a better source. And why I hoard old stuff, happy I'm not the dealer caught in the middle. Good luck.