Installation of gas supply and distribution apparatus; installation of drying apparatus; installation and maintenance of air sterilizers; installation/maintenance and repair of air cooling heat exchangers; repair of air filters and parts thereof; installation of air purifiers; repair or maintenance of industrial washing machines; installation and repair of water filtering apparatus; installation of oxidation apparatus for water purifying; installation, maintenance and repair of exhaust gas re...

Computer software for flow assurance use in crude oil pipelines