text: TIChE was established to force the chemical engineering professional certificate isolated from the industrial engineering. The conference in 1990 was the first effort to establish the organization by the cooperation of Department of Chemical Engineering and Department of Chemical Technology, Chulalongkorn University, and Department of Chemical Engineering, King Mongkut's University of Technology Thonburi. In the 4th conference at Khon Kaen University, 1994, TIChE was formally established and permitted by law on November 15, 1996. Now, TIChE composes 18 university members.