Gem Bids For Deployment Of Camera Based Surveillance System - Surveillance Drone / Unmanned Aerial Vehicle (v2), Reverse Osmosis Based Water Treatment System Above 50 Lph Capacity (v2), Reverse Osmosis Based Point Of Use Water Treatment System For Drinking Purposes (v3) As Per Is 16240, Drone Or Unmanned Aerial Vehicle With Customized Payload, Drone Or Unmanned Aerial Vehicle With Customized Payload (defence Forces - Navy, Army And Air Force), Nonaadhaar Based Biometric Attendance System