Diversification of business and technical efficiency of companies in Vietnam

This study focuses on assessing the technical efficiency of enterprises across 63 provinces Vietnam from 2015 to 2018 and factors affecting their efficiency, in which we focus two factors: business diversification ICT index. In this research, use DEA method group effective ineffective enterprises, then GMM estimate firm’s performance. The research results show that is quite small (about 10%), most have not achieved due wasteful input factors. Research shows both a positive impact increase need pay attention improve terms local government