- National Policy Advisor to the President
- Council of Taoyuan City Hall
- Director of The Manufactures United General Association of Industrial Park of ROC
- Chairman of Yi-Chiu Chemical and Technical Company Limited
- Chairman of Yi-Chiu Corporation
- Chairman of Taiyifong Co., Ltd.
- Chairman of Fabu Greentech Co., Ltd.
- Founder of National Petroleum Corporation, Chairman in first three years
- Director of Taipei City Oil Trade Association
- Director of Taipei County Fuel Station Trade Association
Experience: chemical related
- Vice President of Yi-Chiu Chemical & Technical Co., Ltd.
- President of Taiyifong Co., Ltd.
Experience: environmental, energy-related
- Current Director of Yi-Tzeng Co., Ltd.
- Current Director of Yi-Chiu Corporation
- Current Director of National Petroleum Corporation
Experience: shipping and cargo-related
- Current Director of Coastal Performance and International, Co., Ltd.
- Director Taiwan Fuel & Energy Supply Co., Ltd.