[Class : 37] Contracting Business, Namely Supervision Of Building Construction And Building Project Management, Lease Of Building Material And Equipment, Repair And Maintenance Of Process Plants With Buildings; Repair And Maintenance; Installation; Construction; Construction Of Plants, Including Turnkey And Semi Turnkey Plants; Building And Repair Of Warehouses, Engine Rooms And Warehouse Facilities For Storing Of Cement, Minerals And Raw Materials; Installation, Maintenance And Repair Of Apparatus, Equipment And Machines For Cement And Mineral Production; Construction, Installation, Maintenance And Repair Of Apparatus, Equipment And Machines For Mining And Mineral Dressing Installations; Installation, Maintenance And Repair Of Incinerators And Burners, Cooling Installations And Machines, Filters (Parts Of Industrial Installations), Purifying Plants For Sewers And For Waste Water, Water Cleaning Apparatus And Machines, Water Filtering Apparatus, Combustion Plants, Air And/Or Gas Filtering Installations, Waste Gas Cleaning Installations For Power Stations, Industrial Installations And Ventilation Installations; Installation, Maintenance And Repair Of Turnkey Plants And Process Plants; Installation, Maintenance And Repair Of Mills, Including Raw Mills And Cement Mills For Manufacture Of Cement; Maintenance And Repair Of Machines; Mounting And Start Up Of Machines For Manufacture Of Cement And Mineral Process Installations; Reconstruction Of Torn Or Partly Ruined Machines; Installation, Maintenance And Repair Of Computer Hardware; Installation, Maintenance And Repair Of Apparatus And Instruments For Weighing, Measuring, Signalling And Checking And Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling Electricity.