ar Tech's primary expertise is the complete detailed design of new systems, rebuilds and retrofits. We have the resources to provide partial or complete engineering services according to our clients' needs. Industries Served Chemical Plants Petroleum Refineries Power Pulp and Paper Lumber Mills OSB Plants Plywood Plants Additional Services Engineering Studies Project Cost Estimates Computer Aided Drafting Documentation of Existing Systems Project Management Field Engineering Process Safety Management HAZOP Reviews Engineering Disciplines Process Mechanical Civil/Structural Electrical Instrumentation