centrifugal compressors for air and gases, steam compressors, centrifugal compressors for mechanical vapor recompression, low temperature refrigerating compressors, reciprocating natural gas compressors, reciprocating compressors for air, horizontal gas and air compressors, turbocompressors, hypercompressors for polyethylene production; natural gas dispensers and refueling stations, natural gas reinjection stations, gas and steam turbines, water injection centrifugal pumps, axial compressors, centrifugal pumps, coal slurry pumps, pressure vessels, water and air cooled steam condensors, underwater pipeline and riser joints, ball valves, natural gas compression stations, and oil pumping stations, natural gas electronic dispensers and LPG mechanical and electronic dispensers; water injection stations; petrol pumps; machinery for textile industry, namely, steam presses, fabric shearing machines, fringing machines, fabric raising machines, weaving machines, fabric tentering machines, gas separators for producing oxygen, nitrogen and high purity argon

electronic and remote controls for compressors, gas turbines and natural gas reinjection stations, control and safety valves, electronic and pneumatic instrumentation, namely, electronic pressure transmitters, electronic differential pressure transmitters, electronic level transmitters, electronic and electric/pneumatic converters, pneumatic/electric converters, electronic temperature transmitters, pneumatic valve positioner; compressor reducing and metering stations; pressure regulators; computerized automation systems, namely, Supervisory Control and Data Acquisition (SCADA) apparatus for pipelines, oil, gas and water on-shore and off-shore gathering systems, air and water pollution monitoring, building automation, gas, water and power distribution networks; data logger and supervisory control apparatus for power plants; microprocessor based controllers for administrative transaction management, for warehousing management of material for manufacturers and for production information control; gas meters; control rooms for industrial process control containing controllers, indicators, recorders, square foot extractors and totalizers, microprocessor based continuous and batch process recorders; multifunction process controllers; microprocessor based unit and associated video console for process control and management; local area network distributed control system comprising multiloop controllers, programmable sequence controllers, data acquisition and storage apparatus, video operator consoles and interface units for connecting peripheral system units to a host computer; microprocessor based control units for gas turbine engines

shell and tube heat exchangers, air cooled heat exchangers

maintenance and repair of compressors, pumps, turbines and natural gas refueling and reinjection stations