GC One Report 2023 [EN]

GC Group currently operates 20 commercial polymer plants in Map Ta Phut Industrial Estate, Pha Daeng Industrial Estate, and WHA Industrial Estate (Map Ta Phut) Rayong. Rotomolding compound plants operate in the UK, Poland, Australia, New Zealand, Malaysia, and Thailand. The PP compounding plant is located in the Amata Industrial Estate, Chonburi. GC Group produces and sells its polymers under trademarks through its subsidiaries and joint ventures. The capacities of major polymer products are shown in the table below: Company Product Trademark Nameplate Capacity (thousand tons per year) PTT Global Chemical Public Company Limited (GC) High-density polyethylene (HDPE) InnoPlus 850 Linear low-density polyethylene (LLDPE) 800 Low-density polyethylene (LDPE) 300 Polystyrene (PS) DIAREX 90 HMC Polymers Company Limited (HMC) Polypropylene (PP) Moplen, Purell, Clyrell, Adstif, Adsyl 1,060 AGC Vinythai Company Limited (AVT) Polyvinyl chloride (PVC) Siamvic 450 Thai PET Resin Company Limited (TPRC) Polyethylene terephthalate (PET) InnoPlus 210 Revolve Group Limited (RGL) (1) Rotomolding compound Revolve 76 DynaChisso Thai Company Limited (DYCT) PP compound Polypro 30 Remarks: Hexene-1 is for internal use as feedstock for LLDPE (metallocene), with a capacity of 34 thousand tons per year. (1) Including the expanded production in Thailand under Matrix Polymers Thai Co., Ltd. (“MTP”) with a capacity of 12 thousand tons per year. Policy and Marketing The Polymers Business Unit operates an integrated production, marketing, distribution, and customer service business. GC enjoys a competitive advantage due to lower costs per unit and high-quality products thanks to effective production control as well as consistent technology transfer from and knowledge exchange with technology proprietors as well as continuous production technology research and development. GC also develops its products consistently to meet the needs of its customers and end markets so as to ensure its production efficiency and efficacy. With respect to marketing, GC implements integrated marketing under a market-focused business policy, under which market and customer needs are analyzed to determine the future market direction and develop new products that cater to customer needs and the evolving downstream markets through strategic marketing plans. GC also conducts analyses on competitors and customers, market growth, market trends, assesses and analyzes market drivers, and revises marketing competitiveness enhancement plans and comprehensive marketing strategies. GC also 53 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023

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