7
Oil and gas field production equipment and completion products, namely, oil field artificial lift products, namely, beam pumping units; gas lift systems consisting of gas lift valves, mandrels and latches, all sold as a unit; oil and gas drilling plunger lift systems consisting of plungers, springs, tubing stops, plunger lifts, all sold as a unit; oil and gas field completion equipment, namely, gas filters, sensor switches, control pilots and plug seals and couplings, all sold as a unit; oil and gas well packers; power transmission products other than for land vehicles, namely, high and low-speed gearboxes and bearing assemblies
9
Electronic well-automation systems consisting of rod pump controllers, injection well controllers, progressing cavity pump controllers, variable speed drives for rod pump and progressing cavity pumps and motor control panels, all sold as a unit; well analysis systems consisting of electronic control equipment and computer operating systems used for oil and well production optimization, all sold as a unit
37
Installation, maintenance, troubleshooting and repair of oil and gas equipment; technical support services, namely, troubleshooting in the nature of repair of oil and gas field drilling equipment
42
Custom design and engineering of oil and gas field drilling equipment; new product design and equipment optimization services for the oil and gas industry; monitoring of oil and gas field drilling equipment