David Liu A Phd Graduated From Xi’an Jiaotong University, Senior Engineer, Has Over 18 Years of Experience In Research, Development, Management and Project Industrialization of Electric and Electronic Industry, and Has Served as SVP and CTO of TBEA Xi’an Electric Technology Limited Company (Hereafter as TBEA Xi’an), President of TBEA Research Institute, CEO of TBEA Xi’an,Director In Extra High Voltage Flexible DC Transmission, Flexible AC Transmission SVG, Intelligent

Micro-Grid Energy Router. He Presided Over and Participated In 4 National 863 Projects and Obtained 38 Invention Patents. The Products Researched and Developed By Dr. David Liu Include

±800kV Extra High Voltage Flexible Converter Valve, Energy Router, High Voltage SVG and Photo-Voltaic Grid-Connected Inverter, Etc., Covering Almost All The AC and DC Applications In Resi-dential, Industrial and Commercial and Main Electric Transmission Grid From 400v~±800kV.