[Class : 37] Installation Services, Fire Fighting And Alarm Installations & Repair, Fire Extinguisher Recharging Services; Building Insulating; Renatl Of Fire Fighting Installations, Bulldozers & Cranes; Building Construction, Building Construction Supervision, Repair, Cleaning Of Interior & Exterior; Installation & Repir Of Electric Appliances, Elevator Installation & Repair Drilling Of Wells; Furniture Maintenance.