Air-conditioning apparatus; Air filtering installations; Air purifying apparatus and machines; Air sterilizers; Cooking stoves; Cooking tunnels; Cooling installations for water; Disinfectant apparatus for banknotes; Filters for drinking water; Ionization apparatus for the treatment of air; Ionization apparatus for the treatment of liquids and gases for industrial, commercial or agricultural use; Pipes being parts of sanitary facilities; Purification installations for sewage; Refrigerating app...

INERT GAS PURIFICATION SYSTEMS, INCLUDING RECIRCULATION PUMPS, CHARGED PURIFICATION COLUMNS, REGENERATION HEATERS, AND NECESSARY VALVES AND ELECTRICAL CONTROLS, SOLD AS A UNIT