QOS Sdn Bhd, formerly known as QAF Oilfield Services Sdn Bhd, is a private limited company founded in April 2006. It is fully Bruneian Bumiputra-owned and provides a variety of services and products to the oil and gas industry in Brunei and Southeast Asia. Based in Sungai Duhon, Kuala Belait, the company focuses on offering high-quality services, such as non-destructive testing, rope access, hot tap welding, HDPE welding, rubber lining repair, and work management systems
