Business career
1. 1996/04/01 ~ 2012/03/31
2. 2012/04/01 ~ 2017/03/31
3. 2015/04/01 ~ 2024/03/31
4. 2017/04/01 ~ 2024/03/31
5. 2024/04/01 ~
Committee and society
1. 2018/04/01 ~
2. 2019/08/01 ~
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Present specialized field