She is a member of the board of directors of The Siam Fine Chemicals and of the Foundation for the Petroleum Institute of Thailand (PTIT).
After completing her studies in chemical engineering, Khunying Thongtip Ratanarat became a research assistant at the University of Canterbury in Christchurch, New Zealand.
[7] She is also a member of the national advisory board of the Chulabhorn Research Institute in Bangkok[8] and director emeritus of the Circum-Pacific Council for Energy and Mineral Resources.
[11] During her career she encouraged the local production of natural gas and focussed particularly on the development of biofuels, to overcome the volatility of the petroleum market.
By 2002 she observed that ‘vulnerability is the rule of the game’ due to instability and tension in the Middle East and the related terrorism threats.