Upstream Production Solutions (Upstream PS) is a wholly owned subsidiary of GR Engineering (ASX: GNG) with an outstanding tra ... ck record in the provision of operations, maintenance, projects and advisory services. The Upstream PS team has served the oil, gas, energy, petrochemical and water industries for close to 25 years, developing a reputation for providing safe, innovative and sustainable solutions to production challenges. We are committed to expanding our business to deliver fully integrated services and projects that add value for our clients, our people and the communities in which we work. read more