A: Quality assurance is done by incoming inspections or by alternative methods. Records can be confirmed that materials are accepted after responsible persons of supplier have approved results.
B: In case defects occur, feedback is provided in specified formats. Implementation status of countermeasures is checked by reports, quality meetings, or process audits etc. to avoid recurrence without fail.
C: In case of specification changes, it is confirmed that those changes are reflected to the specifications or drawings.