In response to increase in competition, shortening of products life cycle and quick change in customers’ interests, many companies have emphasized and focused on supply chain as a means for achieving long term competitive advantage. One of the important components of supply chain management is the issue of assessment and selection of suppliers which evaluation of technological capabilities of suppliers plays a significant role in this regard. This is a multi criteria decision making issue. One of the models which has found a wide application in assessment of multi criteria systems and provision of improvements goals for such systems is the model of Data Envelopment Analysis which is presented in this thesis due to low number of decision making units in comparison to assessing criteria for technological capability as well as due to poor accuracy and being phased of some of the measures, some of the data being uncontrollable and having a dual nature, by integrating 2 models of DEA, for assessment of technologic capability of 10 suppliers grade A for SAPCO company in 2010, by strategic emphasis on identification of inefficient units and organizing them under the coverage of efficient units, aiming at reduction of costs and improvement of suppliers selection management.This model was executed by using LINGO software for evaluation of all 5 components of technology (Hardware, Manware, Software, Dataware and Management ability) of suppliers (10 suppliers) and a general ranking was performed and the gap present in all 5 components of technology of suppliers was diagnosed which can provide a considerable contribution for presenting improvement solutions for inefficient suppliers.