IRPC Directors on the Boards of Subsidiaries as of December 31, 2023 No. Name Position 1. Mr. Kunchit Rongdach Chairman 2. Mr. Kwanchai Luengchaichan Director 3. Mr. Panutat Kiatananchai Director 4. Mr. Surachai Toaphicharttrakul Director 5. Mr. Pongsak Wattanakarunwong Managing Director 1. IRPC Oil Company Limited No. Name Position 1. Mr. Somboon Sadsin Chairman 2. Mr. Surachai Toaphicharttrakul Director 3. Mr. Chokchai Olansirikul Director 4. Mr. Panutat Kiatananchai Managing Director 5. Rakpasak Company Limited No. Name Position 1. Mr. Savara Kwangsopa Chairman 2. Miss Athita Anantaturakarn Director 4. Mr. Anucha Somjitchop Director 7. Innopolymed Company Limited No. Name Position 1. Miss Wanida Utaisomnapa Chairperson 2. Miss Athita Anantaturakarn Director 3. Miss Suwanee Buranapraditkul Director 4. Mr. Hu Jie Zhang Director 5. Mrs. Liu Yuhong Director 6. Mrs. Wandee Banyongkarat Managing Director 6. iPolymer Company Limited No. Name Position 1. Mr. Poramet Junwichit Chairman 2. Miss Arisara Suthasut Director 3. Mr. Surachai Toaphicharttrakul Director 4. Mrs. Suchinda Ploymontree Director 5. Mr. Preeda Boonsilp Managing Director 3. IRPC Technology Company Limited No. Name Position 1. Mr. Sergiusz Stefanowski Chairman 2. Mr. Kris Imsang Director 3. Mr. Phichin Aphiwantanaporn Director 4. Mr. Woravuth Sivapetranart Director 5. Mr. Rafal Zdon Director 6. Mr. Waldermar Franz Preussner Director 7. Ms. Soh Bee Hong Director 8. Mr. Kraisri Phankitnirundon Managing Director 2. IRPC Polyol Company Limited No. Name Position 1. Miss Wanida Utaisomnapa Chairman 2. Mr. Phichin Aphiwantanaporn Director 3. Mr. Woravuth Sivapetranart Director 4. Mr. Pranarch Kosayanont Director 5. Mr. Anucha Somjitchob Director 6. Mr. Soji Sakamoto Director 7. Mr. Hideyuki Tokimasa Director 8. Mr. Dai Yamashita Director 9. Mr. Takayuki Mano Director 10. Miss Promporn Sinsoke Managing Director 4. IRPC A&L Company Limite 244 Corporate Governance Structure and Important Information about the Board of Directors, Board’s Committees, Executives and Employees IRPC Public Company Limited
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