Mercedes makes cars in China for the Chinese market, not for world markets. Mercedes just started making C-class models in Alabama, but again for the US domestic market, not world markets (SUVs are a different story -- all ML, GL and R-class models are made in Alabama for world markets).

What does Mercedes China and their strict quality control processes have to do with counterfeit/poor quality parts made in said country? That's comparing apples and oranges.

The bottom line is that Chinese-made aftermarket parts DO NOT have a good track record. You can imagine the common denominator between all of the worst quality aftermarket parts ... companies like UROparts, Hamburg Technik, Trucktek, APA, Meyle, FEQ, etc.