PWS

Purifying apparatus for industrial water; water purification installations, namely, purifying installations for water supply; waste water purification installations; water purification installations, namely, purifying installations for rain water; water purification installations, namely, purifying installations for heavy water; water purification installations, namely, purification installation for river water; purification apparatus for sewage; sewage purification apparatus, namely, apparatus for removing nitrogen from sewage; sewage purification apparatus, namely, apparatus for removing phosphorus from sewage; desalination units, namely, sea water desalination installations