PT Radiant Utama Interinsco Tbk engages in the provision of technical support services to the oil and gas industry. It operates through the following business segments: Operating Support Services, Inspection Services, Agency and Offshore Services, and Others. The Operating Support Services segment covers human resources, repairs and maintenance, vehicle rental, and integrated base management for oil and gas. The Inspection Services segment offers voluntary inspection, statutory inspection, non-destructive testing services, and oil country tubular goods. The Agency and Offshore Services segment includes agency activities; provision of offshore services such as mobile offshore operation production unit; and local shipping services. The Others segment focuses on construction, building management, and other related services. The company was founded on August 22, 1984 and is headquartered in Jakarta, Indonesia.