Third-party logistics (TPL) providers can be seen as supportive supply chain members .This implies that logistics service providers should support alternative supply chain strategies .Supportive members can be defined as “companies that simply provide resources ,knowledge ,utilities or assets for the primary members of the supply chain” .Benefits that supply chains can achieve from TPL services ,based on the literature ,are that they can concentrate an core competencies and capabilities ,concentrate on logistics management ,improve overall performance , find global solutions , enable entry to new markets , control costs , investments , and services , improve customer satisfaction , improve flexibility , and find more solutions of cost efficient service . In general , outsourcing of logistics services adds value when it enhances the performance of a company . Companies focusing on logistics services add value to their customers by providing services in transportation , terminal activities , warehousing , forwarding , packaging , product manufacturing and logistics postponement , distribution , information processing , etc .The term “ third-party logistics (TPL,3PL)” has its foundation in a triadic form of relationship covering seller , buyer and third-party logistics provider .