bids are invited for hiring of services for nbcd marking of internal and external compartments , watertight risk marking for 44 wt doors and 26 hatches in red zone with red equilateral triangle 25 cm length of each side , other side marking at 345 location with 25mm lettring inside box as per name , trunck marking at 345 location with direction arrows depicting flow of air and lettring ac supply and location marking of ventilation fan , watertight control marking of wt hatches and doors for 13 decks contining with letters x y z size 40mm inside a 5 ench circle with white background , gastight control marking of gt doors with letters a m r and hatches with 40mm lettering using fluorescent signal red color and white background inside a 5 ench circle , safety marking that is cleansing popst escape route casualty stretcher emergency scuttles first aid post suction in 24 in numbers passageways and 47 in numbers lobbies total quantity : 3800