When they started building the current Mac Pro in the USA, they couldn't find the correct screws for a particular component. When they eventually found a supplier who could deliver something that was close to spec, the owner of the factory hand-delivered it to them over 22 trips in his Lexus:
https://9to5mac.com/2019/01/28/apple-mac-pro-screwed/
You won't be facing these kinds of delays in China.