Khun Piyabut is the Managing Director of Bangkok Industrial Gas, a joint venture of Air Products and Chemicals Inc.

He started his career as a System Engineer for Yokogawa in Thailand in 1992, after graduating from the Southern Illinois University at Carbondale in the US with an MBA. He then moved on to be a Marketing Representative for Shell in Thailand in 1996.

He has been with Bangkok Industrial Gas since December 1996, starting as a Business Development Manager, and working his way up through the company before reaching his before position in in May 2008.