[Class : 37] Installation Of Energy Saving Apparatus, Drilling Of Deep Oil Or Gas Wells, Oil Pumping, Oil Pipeline Laying, Extraction Of Oil, Pumping Crude Oil, Drilling Of Deep Oil Or Gas Wells, Extraction Of Gas, Dismantling Of Power Lines, Construction Of Power Plants, Repair Of Power Lines, Installation Of Power Generating Apparatus, Installation, Maintenance And Repair Of Computer Network And Information Technology Equipment, Installation Of Solar Heating Systems, Vehicle Battery Charging, Rental Of Battery Chargers, Mobile Phone Battery Charging, Construction Services; Installation And Repair Services; Mining Extraction, Oil And Gas Drilling; Construction And Demolition Of Buildings, Roads, Bridges, Dams Or Transmission Lines, As Well As Services In The Field Of Construction, For Example, Interior And Exterior Painting, Plastering, Plumbing, Heating Equipment Installation, And Roofing; Rental Of Construction Tools, Machines And Equipment, For Example, Rental Of Bulldozers, Rental Of Cranes; Building Construction Supervision; Construction Consultancy; Construction; Factory Construction; Harbour Construction; Installation Of Utilities In Construction Sites; Pipeline Construction And Maintenance; Providing Construction Information; Rental Of Construction Equipment; Rental Of Cranes [Construction Equipment]; Underwater Construction; Warehouse Construction And Repair; Construction Of Educational Buildings; Building Construction Supervision Services For Real Estate Projects