GC One Report 2023 [EN]

Thai Tank Terminal Company Limited, A Joint Venture Company Thai Tank Terminal Company Limited (TTT) 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. On December 9, 2022, TTT entered into a Public Private Partnership (PPP) with the Industrial Estate Authority of Thailand in a public jetty management project for the handling of liquid products in Map Ta Phut Industrial Estate, Rayong for a period of 30 years from the signature date. 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, 2023 as given below. No. Promoted Project Date of Issuance Product and Capacity Expiration of Corporate Income Tax Privilege Remark 1 Scientific laboratories Certificate No. 2265(4)/Or./2554 October 19, 2011 Provision of scientific 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 2 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 3 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 4 Manufacture of downstream petrochemicals Certificate No. 1938(2)/Or/2556 July 1, 2013 Production of approximately 16,000 tons of compound plastics June 3, 2023 Transferred from BPE on July 1, 2013 404

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