As people have stated before, I think a good way of improving QC/QA is to have better communication among different departments. I think in most cases, the quality department only reviews the product at the very end, right before a potential release. This can sometimes run into problems because if issues are found, then the product might have to be terminated and manufacturing would have to start from the beginning. I think there should be “quality checkpoints” where the QA does a quality check at different stages in the development of that product before doing a final check. This way, manufacturing will be able to fix problems along the way, rather than all the way at the end. Also, if mistakes are found, there should be training sessions that allow everyone involved to be aware of these potential errors.