Drying apparatus for chemical processing; heat regenerators for chemical processing; steamers for chemical processing; evaporators for chemical processing; distillation apparatus for chemical processing; heat exchangers for chemical processing; water sterilizers and other sterilizers; wastewater treatment tanks for industrial purposes; septic tanks for industrial purposes; industrial wastewater treatment apparatus; seawater purification apparatus and other water purifying apparatus; liquid filters for use in seawater purification apparatus; seawater desalination units; desalination plants; water filtering apparatus

Construction; installation of seawater purification apparatus; installation of seawater desalination units; construction of desalination plants; construction consultancy; operation, inspection or maintenance of building equipment; repair or maintenance of chemical processing machines and apparatus; repair or maintenance of water pollution control equipment; repair or maintenance of water purifying apparatus; repair or maintenance of chemical plants; repair or maintenance of nuclear power plants