
Tanjung is principally an investment holding company, whilst its subsidiaries and associated companies are principally involved in the provision of engineering equipment, shipowning, ship management and chartering services, equipment maintenance services, drilling and production platform services to the oil and gas and related industries in Malaysia and the region.
Tanjung’s main operating subsidiary, Tanjung Offshore Services Sdn Bhd (TOS) commenced operations in March 1990. TOS is involved in providing comprehensive services to the oil and gas industry and holds various exclusive agencies for a wide range of engineering equipment and parts in Malaysia.
Tanjung commenced its marine support services in 1994 via the setting up of a Marine Vessel Department within TOS and the formation of Tanjung Kapal Services Sdn Bhd (TKS), a ship ownership and management company.

Thereafter, various other subsidiaries and associated companies were set up and acquired to further enhance the provision of integrated support services to the oil majors such as Tanjung NewEnergy Services Sdn Bhd (TNE), Tanjung Petroconsult Sdn Bhd (TPC), Tanjung CSI Sdn Bhd, Tanjung Citech UK Limited, Citech Energy Recovery Systems UK Limited, Tanjung Citech Sdn Bhd, PT Tanjung Offshore Nusantara, Gas Generators (Malaysia) Sdn Bhd and Cendor Mopu Producer Limited.
As of to date, the Tanjung Group is a reputable integrated oil and gas service provider within the Malaysian oil and gas industry and has been expanding its services within the domestic and international markets. Tanjung Group is actively involved in both the upstream and downstream markets within the oil and gas industry and participates in all stages of the life cycle of the Production Sharing Contracts as follows:-
EXPLORATION
• Surface Geochemistry
• Seismic activities
• Vessel services
• Drilling services
DEVELOPMENT
• Hookup & commissioning
• Drilling services
• Structure & construction
• Vessel services
• Engineering Equipment
PRODUCTION
• Flow of oil & gas to onshore plants
• Power generation
• Systems application
• Vessel services
• Engineering equipment
• Maintenance services
MAINTENANCE
• Retrofitting
• Structural strength & corrosion assessment
• Vessel services
• Engineering equipment maintenance
ABANDONMENT
• Dismantling of structures
• Decommissioning of machinery & equipment
• Transportation of physical parts and equipment
• Pollution control exercise and assessment
• Vessel services