GC_ONE REPORT 2021_ENG

THAI TANK TERMINAL COMPANY LIMITED (GC’S SUBSIDIARY) Thai Tank Terminal Company Limited has been granted a concession from the Industrial Estate Authority of Thailand to manage and operate a liquid product handling and storage business in Map Ta Phut Industrial Estate in Tambon Map Ta Phut, Amphoe Muang, Rayong. The concession period is 30 years from October 1, 1992 to September 30, 2022 and grants the rights to design, construct, develop, operate, manage, and maintain a jetty for liquid products. BOI INVESTMENT PROMOTION CERTIFICATES GC and its subsidiaries have been granted investment promotion certificates from the Thailand Board of Investment (BOI), which offer tax privileges such as exemption from import duty on machinery and business taxes on imported machinery and equipment as well as exemption from corporate income taxes on net profit derived from business operation from the date on which income is first generated. The details of the investment promotion certificates that BOI approved and awarded to GC and its subsidiaries and that were in effect as of December 31, 2020 as given below. No. Promoted Project Date of Issuance Product and Capacity Expiration of Corporate Income Tax Privilege Remark 1 Manufacture of petrochemicals Certificate No. 2264(2)/Or./2554 October 19, 2011 Production of approximately 97,937 tons of ethylene per year and 6,307 tons of pyrolysis gas per year January 30, 2022 Transferred from PTTCH on October 19, 2011 2 Scientific laboratories Certificate No. 2265(4)/Or./2554 October 19, 2011 Provision of scientifc laboratory services related to petrochemicals, petroleum, chemicals, polymers, water, and the environment; approximately 60,000 assignments per year January 18, 2023 Transferred from PTTCH on October 19, 2011 3 Manufacture of petrochemicals Certificate No. 2266(2)/Or./2554 October 19, 2011 Production of approximately 75,000 tons of butadiene per year, approximately 40,000 tons of butene-1 per year, and approximately 95,000 tons of by-products, namely isobutene, isobutylene, n-butane, raffinate, C4 acetylene, and C5+ April 29, 2027 Transferred from PTTCH on October 19, 2011 4 Production of electricity and steam Certificate No. 2267(2)/Or./2554 October 19, 2011 Electricity production capacity of 112.5 megawatts and steam production capacity of 560 tons/hour February 28, 2025 Transferred from PTTCH on October 19, 2011 5 Manufacture of petrochemicals Certificate No. 2272(2)/Or/2554 October 19, 2011 Products from Reformer Complex - Reformate: approximately 649,400 tons per year - Naphtha: approximately 1,387,066 tons per year - LPG: approximately 253,037 tons per year - Condensate residue: approximately 1,273,298 tons per year Products from Aromatic Complex - Paraxylene: approximately 681,300 tons per year - Benzene: approximately 371,938 tons per year - Heavy aromatics: approximately 93,978 tons per year August 22, 2021 Transferred from PTTCH on October 19, 2011 384 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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