Customs duty, tax and international trade.
Korean Bar Association.
The only tax lawyer in Korea who has ever served as a customs duty examiner and investigator at the Korea Customs Office. Represented Ge Healthcare(Korea), Janssen(Korea), Bayer(Korea), Prada(Korea), Shure, NI(Korea), Oticon(Korea), JTI(Korea), Tyco(Korea), Husqvarna, Medtronic(Korea), Johnson & Johnson Medical(Korea) in connection with customs matters (2009-2015).
Customs Enforcement Law (penalties and fines), 2009 ; Study on Customs Penalty Reform Through Analysis of Customs Penalties of Developed Countries (a thesis prepared for the Ministry of Strategy and Finance), 2009.
National Tax College (BA in customs, 1993).