Rex International Holding Limited is a Singapore based investment holding company. The Company operates through three segments: Oil and Gas; Non-Oil and Gas, and Corporate. The Company's Oil and Gas segment is involved in oil and gas exploration and production with concessions located in Oman and the United Arab Emirates (UAE), Norway, the United States, and Trinidad and Tobago. The Company's Non-Oil and Gas segment relates to technology segment. The Company's subsidiary Rexonic AG owns the ultrasound technology for commercial oil well stimulation. Rex Technology Management (RTM) owns the Rex Virtual Drilling (RVD) technology to look for oil, about using conventional geological and geophysical studies to look for structures, from the analysis of sound waves captured in seismic data. The Company's Corporate segment relates to corporate functions.