bids are invited for custom bid for services - biennial job contract forchemistry operation areas including fgd- swro,desalination plant laboratory of ntecl vtps - services for operation and laboratory , ro wtr sys-assistance in desk operation , ro wtr sys (<>) deployment of diploma ho , laboratory assistance services , ro sys-assistance in operation diploma , deployment of unskilled manpower , other services , tractor/trolley (<>) depl , bulk chemicals (<>) unloading , clarifloculator (<>) cleaning , cleaning of fgd -swro tanks , hydra(cap-14t) depl with driver and fuel , supply of consumables , flower brooms , floor mop brush , coconut brooms , cotton waste , brooms with large handles , buckets with mugs , toilet brushes , hand wash liquid , phenyl bottles (1 ltr) , colin spray ( 500 ml bottle) , odonil packets , air wick air freshener spar-245 ml - lem , floor cleaning wiper 2 feet , toilet cleaner harpic 500 ml , floor cleaner solution lizol citrus , wheel detergent powder , glass cleaning wiper small