Oil & Gas Company

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• Medco Energy
• Exxon Mobile
• Pertamina EP
• Pertamina Hulu Energi
• Pertamina Talisman - Jambi
• Vico
• Petrochina
• Santos

Engineering Companies & Fabricators

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• Worley Parsons
• PT. Singgar Mulia
• PT. JGC Indonesia
• PT. Meindo Elang Indah
• PT. Tripatra Engineering
• PT. Raga Perkasa Ekaguna
• PT. Jetec Indonesia
• PT. Sarku Engineering Utama
• PT. Timas Suplindo
• PT. Sanggar Sarana Baja
• PT. Yokogawa Indonesia

Power & Energy

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• Pertamina Geothermal Energy
• Chevron Geothermal Indonesia