Traditionally, the product makers usually conduct an inspection of the finished product after the product is made by way of sorting the good products from bad, and then reworked parts of the product was defective. Thus the traditional sense of the concept of quality is only focused on inspection activities to prevent the escape of defective products into the hands of customers. Inspection activity is viewed from the perspective of modern quality systems are in vain, because it does not contribute to the improvement of quality

At present, the understandings of the concept of quality are broader than just the inspection activity. Modern understanding of the concept of quality is to build a modern quality system. Basically, modern quality systems are characterized by the five following characteristics:
A. System of modern quality-oriented customers.
2. Modern quality systems are characterized by the presence of active participation, led by top management in the process of quality improvement on an ongoing basis
3. Lack of understanding of each person specific responsibility for quality
4. Modern quality systems are characterized by the presence of activity-oriented on prevention of damage, rather than focusing on efforts to detect any damage.
5. Modern quality systems are characterized by the presence of a philosophy that assumes that quality is a “way of life”.