The firms operating must manage the value network effectively. Because of this,
the importance of Supply Chain Management (SCM) including supplier-manufacturer
and manufacturer-customer relations grow rapidly nowadays. It can be said that the
supplier enterprises contribute to the basic performance criteria of the enterprise in basic
financial indicators, indicators of productivity, indicators for the quality and also it can
be said that these contributions depending on developing buyer-supplier relations
become more important. As it is seen in Table-1 there are many studies on indicating
the impact of SCM practice on the company performance.