Sentence Explanations Not only is the cost of purchased materials and supplies a significant part of total costs in most organizations, but there is a major opportunity for leveraging the capabilities and competencies of suppliers through closer integration of the buyers and the suppliers logistics processes4. Not only is the cost of purchased materials and supplies a significant part of total costs in most organizations, but there is a major opportunity for leveraging the capabilities and competencies of suppliers through closer integration of the buyers' and the suppliers' logistics processes . Sentence Explanations