11 Turbine rinse water purification units; Airframe wash water treatment units; Water purification units; Water softening units; Water conditioning units; Water treatment equipment, namely, units for treatment of turbine rinse water through distillation, filtration, reverse osmosis, ultraviolet sterilization and ozone methods of purification; Water treatment equipment, namely, units for treatment of airframe wash water through distillation, filtration, reverse osmosis, ultraviolet sterilization and ozone methods of purification; Water treatment equipment, namely, units for treatment of drinking water through distillation, filtration, reverse osmosis, ultraviolet sterilization and ozone methods of purification