We check the quality during each production steps.
First, we'll check the quality of the material we booked, if not good, we'll return the material to material factory.
Then we have many QC to check the semi-finished products during each production step, the unqulified parts will be picked out.
Before packing, all the goods will be inspected again, also we'll picked out the no good products during packing.
Final, our sales we'll make a random inspection before the goods delivery.
We always consider the quality as the first.