GC_ONE REPORT 2021_ENG

POLICYON INVESTMENTS INSUBSIDIARIES, JOINTVENTURES, AFFILIATES, AND OTHERS As a policy, GC invests in subsidiaries, joint ventures, affiliates, and others to support and promote business growth and ensures governance by appointing its Executives to the board of subsidiaries and assigning its representiatives to serve as Directors in subsidiaries, ventures, affiliates, and others. The presence of GC’s representatives as Directors or Executives in subsidiaries, ventures, affiliates, and others enables it to participate in policymaking, stay informed, and periodically monitor performance. Any activity that may have a significant impact on GC must be approved by the Board of Directors first. As of December 31, 2021, GC’s investments in subsidiaries, joint ventures, affiliates, and others were as follows: Company Abbreviation Business Type Registered Capital (Million Baht) Paid-up Capital (Million Baht) Ownership Interest (%) SUBSIDIARIES 1 allnex Holding GmbH allnex9) Manufacturing and distribution coating resins & additives 275,000 euros 275,000 euros 100 (via GC BV) 2 ENVICCO Co., Ltd. ENVICCO Manufacturing, distribution, and development of recycled polyethylene terepthalate and recycled high-density polyethylene 1,080 1,0264) 70 3 PTTGC International Private Limited GC Inter Investing in overseas petrochemical business SGD 304.2 million/ USD 4618) million/ EUR 2498) million SGD 304 million/ USD 4618) million/ EUR 2498) million 100 4 GC Estate Co., Ltd. GCEC Land and property management 7,200 7,200 100 5 GC International Corporation GCI Investing in overseas petrochemical business USD 1 USD 1 100 (via GC Inter) 6 PTTGC Innovation America Corporation GCIA Open innovation and technology scouting services USD 200 USD 200 100 (via GC Inter) 7 GC Logistics Solutions Co., Ltd. GCL Integrated logistics services 1,200 1,200 100 (99% direct interest held, 1% via SUN) 8 GC Marketing Solutions Co., Ltd. GCM Distribution of GC Group’s polymer products 40 40 100 (99% direct interest held, 1% via SUN) 388 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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