Yeah, because Chinese companies are never going to risk damaging their customer relationships with American companies. It's just not worth the risk of them making more profits because they value the customer, Apple, who could easily move operations from a company that relies on them for the majority of their production. Apple outsources certain components amongst different vendors for displays, memory, storage, SoC, CPU, etc. But to bring all of these components together; no one else is set up with the tooling for fabricating boards with all of these components at very high volumes for Apple. Apple likes to tout that they don't rely on one vendor. But, they do with the assembly of the entire product from Foxconn for their mobile line and Quanta (Taiwan but largely governed by China) for the desktop. All of those components are just neat looking and useless without the logic boards and assembly to connect them.
However, they'd never do that over profitability. LOL.