[Class : 37] Building Construction, Construction Of Bridges, Canals, Dams, Earth Works, Buildings, Roads, Public Utility Works, Barrages, Reservoirs, All Types Of Irrigation Works And All Other Construction Services, Mining Extraction, Harbour & Airport Construction, Pipeline Construction & Maintenance, Quarrying Services; All Types Of Appliance Installation, Repair, Installation & Supervision Services; Being Services Included In Class 37