PRINCIPAL TECHNOLOGY, INC.

Skid-mounted oil and natural gas extracting and processing machines, namely, amine treating units for the removal of acid gas compounds from natural gas, petrochemical, and petroleum refinery process streams, sulfur recovery units for the conversion of hydrogen sulfide to elemental sulfur, tail gas treating units for treating and recycling residual hydrogen sulfide from the sulfur recovery unit, and thermal oxidizers for the oxidation of hydrogen sulfide bearing gas streams; Gas diverter systems consisting of piping, heat transfer equipment and valves

Continuous and batch process electronic control systems used in a variety of oil and gas exploration, refining and treating, manufacturing, and chemical plants and processes; Automated modular process equipment used in oil and gas refining and gas treating plants; Emissions monitoring and process control systems consisting of field instruments, controls and interfaces, control panels, metering and reporting instruments, electronic instruments and controls, and control software; Electrical integrated control systems for use in the field of oil, gas, chemical, petrochemical, processes and manufacturing; Automated process control systems, namely, micro-processor based hardware and software used to monitor the status of industrial processes, namely, oil and gas production, treating, and refining processing; Automated valves for use in sulfur recovery units for the conversion of hydrogen sulfide to elemental sulfur and related byproducts

Gas burners for industrial sulfur recovery units, tail gas treating units, acid gas incineration and thermal oxidizer units; Burner management systems for oil, gas, chemical, and petrochemical heaters and processes industrial boilers, waste gas incinerators, and thermal oxidizing units; Natural gas treating and refinery process gas treating systems comprised of sour gas treating equipment, sulfur recovery and acid gas conversion equipment, residual sulfur recovery unit tail gas treating units, and acid gas thermal oxiders sold as a unit; Gas treating units, sulfur recovery units, and tail gas treating units, for oil, gas, petrochemical, and chemical processes that generate acid bearing gas byproducts comprised of separators, vessels, pumps, blowers, burners, storage tanks, and heat exchangers, all sold as a unit