"Theorists and practicients of quality sometimes ""forget"" basic object and subject of quality- BUYERS, dealing with different problems, as quality, causes and limits of quality improvement, combinations of standards etc.If we want to leave behind that situation, it is necessary to change behaviour of all business factors, or reengineering, according to processing model of quality system. If it results with buyer`s satisfaction, one of the basic conditions for business success is accomplished. In this paper, process reengineering is priority, as well as management re-engineering, project reengineering, all in function of quality."