thing is different countries made different modules
so you get the variations in vendors and suppliers and materials
Another good point about the origin of manufacture. But there would have to be universal standards for manufacturing techniques, minimum tolerances, operating system coding/compatibility, QC/QA, and the like. If you’re going to build a car with your neighbor, you’re going to be sure sure your engine not only mates to his transaxle, but the horsepower from the engine reaches the road properly. And the internal power is going to be 12 VDC universally, and not 6 VDC like your partner engineered it because that’s the way they do it in his shop. Couplings in brake lines have to mate and be able to hold the same pressure tolerances and viscosity of fluid. A thousand little details when you invite the neighborhood to help build the thing. After all this time, I think we can eliminate a basic ‘oops’ occurring on the drafting table. They’re gonna have to Perry Mason the hell out of this one, methinks.