Positions: Audit Committee Chairman and Independent Director
Age: 82 years
Nationality: Thai
Education
• Bachelor of Engineering (Mechanical), Chulalongkorn University
• Certificates: Thai Institute of Directors Association
    Director Accreditation Program (DAP), Class 3/2003
    Director Certification Program (DCP), Class 38/2003
    Finance for Non-Finance Director (FN), Class 7/2003
    Audit Committee Program (ACP), Class 4/2005
    DCP Refresher Course (RE DCP), Class 1/2008
    Monitoring the System of Internal Control and Risk Management (MIR), Class 14/2013
Date of Appointment as Independent Director: June 21, 1993
Date of Appointment as Audit Committee Chairman: July 14, 2021
Period of Directorship: Holding Independent Director Position since 1993 until present for a total of 29 years and 6 months
Shareholding in the Company as at December 31, 2022: None
Direct and indirect interest in any of business with Company and its subsidiaries: None
Family Relationship with Executives: None
Number of Director Positions in other Business
• Listed Company – None
• Non-Listed Company – None
Past 5-Year Work Experience:
1993-2021: Independent Director and Audit Committee Member, Lanna Resources Public Co., Ltd.
2002-2005: Director, Siam Gypsum Industry Co., Ltd.
1997-2004: Director, Lafarge Prestia Co., Ltd.
1989-1999: Director, Sakdi Chaiyasit Co., Ltd.
1988-1996: President, Siam Industrial Corporation Ltd.