International Christian University
- 1978-1983 Sales specialist for Importing Aircraft Sub System and Parts
- 1983-1988 Deputy Manager of Marketing and Procurement of US Products for Semiconductor, PCB and Aircradt to Japan.
- (Work in Los Angeles)
- 1988-1993 Sales Manager of PCB Production Equipment
- 1993-1999 Director(then Vice President) of Supply Chain Management of US and EU Products for Semiconductor Production Equipment(Work in Sunnyvale and Austin)
- 1999-2003 Vice President of TEL HQ for Supply Chain Management and Quality System
- 2003-2010 Vice President of Supply Chain Management for TEL HQ and Factories.
- 2010-2015 Vice President of TEL HQ Environment Management
- 2015- Now Sr. Advisor for TEL HQ R&D and EHS (Now at Development Strategy Dept. )