Originally Posted by
vespasianus
Spot on summary in that video. Generic Chinese manufacture and QC accountability is a lottery. Combine that with a labour-intensive manufacturing process, a multitude of carbon types/grades and layup designs and the results are going to be all over the place.
The big-name brands clearly have their QC issues too, but they have far more control over the whole design/production process and internal accountability. Where the bikes are manufactured is pretty much irrelevant in this respect. But we know that many of the best carbon frame production facilities are in the Far East, mainly Tawain. Brands like Giant probably have the most control over overall design and manufacturing as it is all in-house.