from the Board of Directors Meeting No. 1/2018 held on 23 February 2018 at 10.00 hrs. The Related Parties  PTT Global Chemical Public Company Limited (“PTTGC”) is the related person due to PTTGC is the

: OCEAN GLASS PUBLIC COMPANY LIMITED PTTGC: PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED SGC: SG Capital Public Company Limited   Reset GLOBAL CONNECTIONS PUBLIC COMPANY LIMITED Sustainability Development

held on 23 February 2018 at 10.00 hrs. The Related Parties  PTT Global Chemical Public Company Limited (“PTTGC”) is the related person due to PTTGC is the one of the major Shareholders of the Company

: NEWCITY (BANGKOK) PUBLIC COMPANY LIMITED NETBAY: NETBAY PUBLIC COMPANY LIMITED PB: PRESIDENT BAKERY PUBLIC COMPANY LIMITED POST: BANGKOK POST PUBLIC COMPANY LIMITED PTTGC: PTT GLOBAL CHEMICAL PUBLIC COMPANY

: PTG ENERGY PUBLIC COMPANY LIMITED PTL: POLYPLEX (THAILAND) PUBLIC COMPANY LIMITED PTT: PTT PUBLIC COMPANY LIMITED PTTEP: PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY LIMITED PTTGC: PTT GLOBAL CHEMICAL

LIMITED PTTGC: PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED PYLON: PYLON PUBLIC COMPANY LIMITED Q-CON: QUALITY CONSTRUCTION PRODUCTS PUBLIC COMPANY LIMITED QH: QUALITY HOUSES PUBLIC COMPANY LIMITED QLT

14,757,500 0.98 GPSC PTTGC TOP TP Others PTT Ministry of Finance 51.11% 48.18% 48.03% 26.00% 22.58%22.73% 8.91% 20.79% 25.00% 74.00% (Translation) Name Number of shares Percentage of Issued shares and voting

of Audit Committee, PTTGC Global Chemical Public Company Limited • Independent Director, Member of Audit Committee, Chairman of Sustainable Development Committee, Advanced Info Service Public Company