[Class : 37] Construction Services; Installation And Repair Services; Drilling And Pumping Of Oil; Fuel Pump Installation, Maintenance And Repair Services; Installation, Maintenance And Repair Services Of Pumps; Oil Pumping; Mining Extraction, Oil And Gas Drilling; Oil Pumping And Extraction; Installation, Maintenance And Repair Of Compressors, Air Pumps, Vacuum Pumps, Air Blowers, Air Filters, Alternators, Pressure Regulators And Oil Separators; Installation, Maintenance And Repair Of Pumps And Pump Stations; Installation, Repair, Maintenance And Servicing Of Oilfield Machinery And Equipment; Installation And Maintenance Of Pumps Including Sucker Rod Pumps, Centrifugal Pumps, Submersible Pumps And Artificial Lift Systems; Installation, Maintenance, And Repair Of Oilfield Equipment, Including Sucker Rods, Couplings, And Sub Couplings; Maintenance And Repair Of Forging And Heat Treatment Equipment; Oil Pumping Services; Oil Well Drilling And Pumping Services; Providing Information Relating To The Repair Or Maintenance Of Pumps; Pump Repair; Pump Repair And Maintenance; Pumping Crude Oil; Advisory Services Relating To Maintenance And Repair Of Oilfield Extraction Equipment; Rental Of Oil And Gas Field Machinery; On Site Support Services For Pump Systems And Artificial Lift Equipment; On Site Assembly, Maintenance, And Servicing Of Industrial Machinery And Components Used In Oil And Gas Extraction