Membrane filtration units for water treatment apparatus; Water filtration units; Membranes for reverse osmosis unit; Membranes for filtration of water; industral waste water purification palnts; installations for the recycling (Purification) of waste water

Water sterilizers; water purifying apparatus and machines; filters for drinking water; purification installations for sewage; water purification installations; sanitary apparatus and installations; water distribution installations; water supply installations; gas scrubbing apparatus; cooling appliances and installations

Water treating; air purification; decontamination of hazardous materials; recycling of waste and trash; colour separation services; food and drink preservation; cloth waterproofing; metal casting; assembling of materials for others; production of energy

Membrane filtration units for water treatment apparatus; Installations relating to membrane filtration technology; Membrane purifying apparatus for the purification of water; Membranes for reverse osmosis units; Membranes for the filtration of water; Membranes for water filtering apparatus; Reverse osmosis membrane filters for water treatment