provision of annual comprehensive maintenance of equipments installed at various transit facilities at chandipur ( konark, sagardeep, emu office, sagar darshan, ngo, lc-iii, nilgiri and other areas within drdo complex ) under emu ( r&d ) chandipur , provision of annual comprehensive maintenance of equipments installed at various transit facilities at chandipur ( konark , sagardeep , emu office , sagar darshan , ngo , lc-iii , nilgiri and other areas within drdo complex ) under emu ( r&d ) chandipur , video disply ( tv ) ( led / lcd / portable ) , deep freezer , refrigerator , aqua guard filter , reverse osmosis ( ro ) water purifie , water cooler , washing machine , wet grinder / mixer / juicer , geyser , lpg manifold ( cooking system )