Contact 41 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023 Investor Relation Department Tel: + 66 (0) 2265 8400 ext. 8670, 8665, 8533, 8534 e-Mail: ir@pttgcgroup.com Corporate Governance Department Tel: +66 (0) 2265-8400 ext. 3 e-Mail: cg@pttgcgroup.com Head Office 555/1 Energy Complex, Building A, 18th Floor Vibhavadi Rangsit Road, Chatuchak Sub-District, Chatuchak District, Bangkok 10900 Tel: +66 (0) 2265-8400 Fax: +66 (0) 2265-8500 Branch 1 Rayong Office 59 Rat Niyom Road, Noen Phra Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3899-4111 Branch 2 Olefins 1 14 I-1 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3899-4111 Branch 3 Olefins 2 9 I-4 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3899-4111 Branch 4 Aromatics 1 4 I-2 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3897-1000 Fax: +66 (0) 3899-4111 Branch 5 Aromatics 2 98/9 Rayong Highway Road 3191, RIL Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3897-1000 Fax: +66 (0) 3899-4111 Branch 6 Refinery 8 I-8 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3897-1000 Fax: +66 (0) 3899-4111 Branch 7 Jetty And Buffer Tank Farm 19 Rong Pui Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3899-4111 Branch 8 Aromatics Tank Farm 11 I-4 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3897-1000 Fax: +66 (0) 3899-4111 Branch 9 Lab Service Center Branch 24/9 Pakorn Songkrohraj Road, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3899-4111 Branch 10 Customer Solution Center 555/1 Energy Complex, Building A, 1st, 9th, 14th, 16th-17th Floor Vibhavadi Rangsit Road, Chatuchak Sub-District, Chatuchak District, Bangkok 10900 Tel: +66 (0) 2265-8400 Fax: +66 (0) 2265-8500 Branch 11 Olefins 3 8 Pa Daeng Road, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3897-6205 Branch 12 Polyethylene 8 I-10 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3899-4000 Fax: +66 (0) 3897-6977 Branch 13 Innoplus Solution Center 83/9-10 Village No. 5, Tup Ma Sub-District, Mueang Rayong District, Rayong Province 21000 Tel: +66 (0) 3899-4526 Fax: +66 (0) 3899-4452 Branch 14 LLDPE Maintenance Office 32 Rong Pui Road, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: +66 (0) 3897-5000 Fax: +66 (0) 3899-4111 Branch 15 GC Thai Petrochemical Learning Center 66 Highway 363 Noen-Phra Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: + 66 (0) 3899-0000 Fax: - Branch 16 Glycol Plant 9-9/1 Soi G12, Pakorn Songkrohraj Road, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: + 66 (0) 3899-7000 Fax: - Branch 17 Polystyrene Plant 7 I-1 Road, Map Ta Phut Industrial Estate, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: + 66 (0) 3897-6000 Fax: - Branch 18 Phenol Plant 9 Soi G9 Pakorn Songkrohraj Road, Map Ta Phut Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: + 66 (0) 3864-3000 Fax: - Branch 19 Oxirane Plant 12 Soi G4 Pakorn Songkrohraj Road, Huai Pong Sub-District, Mueang Rayong District, Rayong Province 21150 Tel: + 66 (0) 3899-4000 Fax: -
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