[Class : 37] Construction Of Water Treating And Sewage Purification Facilities, Apparatus And Installations; Operation Of Water Treating And Sewage Purification Facilities, Apparatus And Installations; Maintenance Services Of Water Treating And Sewage Purification Facilities, Apparatus And Installations; Repair Of Water Treating And Sewage Purification Facilities, Apparatus And Installations; Renovation Of Water Treating And Sewage Purification Facilities, Apparatus And Installations; Civil Engineering, Architect, Building Engineering Works; Building Engineering Assembly; Assembly Of Equipment For Water Treating, Sewage Purification Installations, Sewage Purification Machines, Pipelines And Fittings For Pipelines; Maintenance Of Equipment For Water Treating, Sew Age Purification Installations, Sewage Purification Machines, Pipelines And Fittings For Pipelines; Repair Of Equipment For Water Treating, Sewage Purification Installations, Sewage Purification Machines, Pipelines And Fittings For Pipelines; Maintenance And Repair Of Water Purification Equipment; Information Services Related To Maintenance Or Repair Of Water Purification Equipment; Information Services Related To Maintenance Or Repair Of Sewage Purification Equipment; Repair Or Maintenance Of Sewage Purifying Apparatus.[Class : 40] Wastewater Treatment; Water Treating; Water Purification; Technology For Water Treating And Sewage Purification; Services For Sewage Purification And Wastewater Treatment; Collection Of Wastewater; Reception Of Wastewater; Biological And/Or Chemical Operation For Purification Of Waste Water; Waste Management Services; Treatment Of Waste Water From Industrial Processes; Industrial Treatment Of Effluents; Leasing Of Water Purification Equipment.[Class : 42] Services Of Engineering, Civil Engineering Building Engineering Related To The Field Of Sewage Purification; Construction Services; Architectural Consultation; Technical Planning Of Water Purification Plants; Planning Services Related To The Field Of Sewage Purification; Researching Ser Vices Relate To The Field Of Sewage Purification; Expert Opinion Relate To The Field Of Sewage Purification; Computer Software Design And Updating Of Computer Software Relate To The Field Of Sewage Purification And Treatment; Computer System Design Relate To The Field Of Sewage Purification And Treatment; Computer Software Relate To The Field Of Sewage Purification And Treatment; Rental Of Computer Software Relate To The Field Of Sewage Purification And Treatment; Consultancy In The Field Of Environmental Protection; Surveying Relate To The Field Of Sewage Purification And Treatment.