we are some restrict policies on quanlity controal.
1. We have our own chips testing line, and we test chips 100%. if in any case there are over 5% defective, we would return the whole batch to suppliers.
2. For material or semi product, we do 100% QC and in any case if there is above 5% defective, whole batch is returned.
3. and we have QC on each line, for silk printing, full color printing, chips test line, packing line,
in the whole product proceedure, we have 8 QC steps just to ensure every order is qualified.