Business career
1. 2018/04/01  
2. 2017/03/10 ~ 2018/03/31  
3. 2011/06/01 ~ 2017/07/09  
4. 2009/04/01 ~ 2011/05/31  
5. 2008/04/01 ~ 2009/03/31  
Present specialized field
Papers
1. 2017  
2. 2017  
3. 2017  
4. 2016