| In the development process, QA undergoes the | | | | of low-quality products. It is not good and economical |
| following phases: | | | | when compared with the method of finding out the |
| 1. Inspection-based QA | | | | reasons to solve. |
| Inspection-based QA has the following shortcomings: | | | | + Even when the inspection is so serious, mistakes |
| + Inspection becomes unnecessary and a great | | | | cannot be fully detected and removed. |
| waste when production is well-arranged and products | | | | + Detecting mistakes through checking cannot help |
| have fewer mistakes. | | | | producers improve product quality but just do the |
| + Responsibility in QA belongs to sellers (producers), | | | | corrections and rejection. |
| buyers will check products when purchasing if they | | | | However, it emphasizes that when mistakes happen, |
| have any doubt about product quality. If sellers | | | | all products must be checked. |
| (producers) have effective QA systems, buyers do | | | | 2. QA based on production administration. |
| not need to check. | | | | Because of the limits in inspection-based quality |
| + Information from Product quality checking | | | | assurance, it tends to use the quality assurance |
| departments to production departments takes much | | | | based on production administration that requires all |
| time and is sometimes useless while mistakes are | | | | members' performance. Accordingly, all parts relating |
| repeated. Conversely, if they connect customers' | | | | to product quality such as technical departments, |
| interests with product quality and have responsibility | | | | supply departments, production departments and |
| for their products and work, they will have | | | | sales departments have to do the product quality |
| self-inspection that brings about more flexible | | | | management. |
| corrections and more possibility of making no | | | | 3. QA during product life, specially focus on quality |
| mistakes. | | | | assurance right from product research phase. |
| + Checking normally allows accepting a definitely rate | | | | |