SCGC and GC Sign Memorandum of Understanding to Explore Potential Strategic Joint Venture Formation of Olefins and Polyolefins Businesses in Thailand, Aimed at Securing Thailand's Petrochemical Supply Chain

Bangkok, Thailand – 29 April 2026 – PTT Global Chemical Public Company Limited or GC and SCG Chemicals Public Company Limited or SCGC today announced the signing of a non-binding Memorandum of Understanding (“MoU”) to comprehensively explore the potential strategic formation of a joint venture of their respective olefins and polyolefins (Polyethylene and Polypropylene) businesses in Thailand. The potential joint venture is expected to strengthen the security of Thailand’s supply chain and enhance the competitiveness of petrochemical and related domestic industries, leveraging the country’s integrated infrastructure to further enhance global competitiveness.

Mr. Narongsak Jivakanun, Chief Executive Officer of GC, added “The objective of this potential joint venture is to establish a leading petrochemical player in the region, reinforcing the global competitive advantage of Thailand’s integrated infrastructure. A combination of this scale offers a compelling opportunity to enhance operational efficiencies and strengthen value via value chain integration, and enable higher product value. At the same time, it aims to ensure the continuity of end-use industries in Thailand, enhance international competitive position, and contribute to the country’s economic growth.”

“This collaboration will reinforce the strength of Thailand's petrochemical industry while enhancing its resiliency and global competitiveness. It will further elevate Thailand's role as a regional hub for production and export, support the growth of downstream industries through a diverse portfolio of high-value-added products, address evolving market demand, and create sustainable long-term economic value for Thailand's industrial sector,” said Mr. Sakchai Patiparnpreechavud, Chief Executive Officer & President of SCGC.

The MoU is preliminary and non-binding, and it is an initial step in the evaluation process. Any potential transaction remains subject to the results of due diligence and receipt of the relevant corporate and regulatory approvals including approval from the Trade Competition Commission of Thailand (if applicable). The evaluation is expected to be completed withinQ3/2026. During this period, both companies will continue to operate independently and in the ordinary course of business throughout this period.

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About GC PTT Global Chemical Public Company Limited, or GC, is dedicated be a leading global chemical company that enhances people’s lives with innovative plastics and chemicals following our vision of Chemistry for Better Living. We operate a business that prioritizes the balance of environment, social, and corporate governance alongside economic (ESG) efficiency, aiming to maximize resources use under the Circular Economy concept. GC focuses on innovating products and solutions that address megatrends while meeting the expectations of all stakeholders.

GC is the only company in the world to have been ranked number 1 in the Chemicals Sector by the Dow Jones Sustainability Indices (DJSI) with the highest score for seven consecutive years (2019-2025) by S&P Global. Also, we have been rated at A Level in water management and B Level in climate change by CDP. Currently, GC has more than 90 operational sites globally and 40 R&D centers in 20 countries worldwide. GC is driving toward becoming a low-carbon organization while ensuring sustainable business growth on our journey towards achieving Net Zero by 2050.

About SCGC SCG Chemicals or SCGC is a leading integrated polymer and solutions provider for sustainability with strategic bases in Vietnam, Indonesia, and Thailand, offering a full range of petrochemical products ranging from upstream production of olefins to downstream production of 3 main plastics resins: polyethylene, polypropylene, and polyvinyl chloride. SCGC focuses on inventing innovation to drive the ASEAN economy and elevate the quality of life in accordance with ESG and circular economy. SCGC develops technology and innovation toward HVAs in infrastructure, consumable packaging, automotive, health and well-being, and energy solutions, while ensuring sustainable environmental stewardship.