Items - Operation And Maintenance Of HVAC System (Heating, Ventilation And Air Conditioning System) - Complete System,ANNUAL MAINTENANCE SERVICES FOR WATER PURIFICATION AND CONDITIONING SYSTEM (Version 2) - Potable Water Purification System Reverse Osmosis Or UV Based; 10 and above; PACKAGE-5 : Water purifier and conditioning system maintenance involving basic servi..,Annual Maintenance service-AIR CONDITIONER
