>>2435430That is why you pay another chink to inspect the goods after your specification, he'll get a bonus for every documented case of bad manufacturing. The manufacturer must agree to take back the goods and pay the bonus for the QA chink as a penalty.
Sadly, this is only feasable for large companies. If you buy at Aliexpress you get the goods that didn't make it through QA.
This kind of QA and binning is typical.