The 2015 3rd International Symposium on Engineering and Natural Sciences (ISEANS 2015) will take place on 12-14 Aug 2015 in Beijing, China.  ISEANS is the premier forum for the presentation and exchange of past experiences and new advances and research results in the field of theoretical, experimental and applied engineering and natural sciences. The symposium welcomes leading experts, researchers, engineers, scientists as well as graduate and postgraduate students working in related fields of study from across the world. Accepted papers presented at the conference will be published in the Proceedings of ISEANS. Acceptance will be based on quality, relevance and originality. Both full research reports and working reports are welcome. There will be both oral and poster sessions.