[Class : 37] Building Constrution Services Civil Engineering Services Construction Engineering Services Asphalting Bricklaying Renovation And Restroation Of Building Central Heating Installation Slum Cleraence Tilling Cable Laying Drainage Dredging Earthmoving Excavating Repair Insttallation And Maintence Service In Respect Of Vehicle Elvators And Escalators Electrial And Mechanical Plants Industrial Machines Air Conditionreres Office Automation Equipment And Information Technology Syustems Secrity Equipment And Suystedms Computers And Computer Dperpherals Spare Parts And Accessories There Of Repair Insttallation And Maintenance Oelectricity Hating Ventilation Air Conditionr Refrigeration Plumbing Solid Waste Disposal Fire Services, Cabling And Ducting Systems And Equipments, Alarm Or Surveliance Systems And All Mechnical And Electrical Appartsu, Office Automation Equipments, Data Processing Equipment, Audio Video, And Data Recording And Reproducting Appartus, Broadcasting Appartus Calculting Mach