Matrix Service Company designs, constructs, maintains, and provides specialized repair services and products for aboveground storage tanks, provides general industrial construction and in-plant routine maintenance, process unit turnarounds and construction services principally for petroleum refineries, bulk storage terminals, pipelines, power plants and chemical plants. Matrix Service Company is a top-tier engineering, procurement and construction company providing these services, as well as fabrication, maintenance and repair, to the energy, power and industrial markets . The Company provides services through four subsidiaries: Matrix PDM Engineering, Matrix North American Construction (its direct hire union subsidiary), Matrix Service Inc., and Matrix Applied Technologies.