wbkp / cp / nit-75 / dmg items / ten e-tender for supply and maintenance of different types of dmg items to be used by disaster management group ( dmg ) , kolkata police . , supply & maintenance of different types of dmg items to be used by disaster management group ( dmg ) , kolkata police , power chain saw , portable tower light , inflatable rubber boat ( 4-5 seater ) with obm , backpack batteries for cordless cut-off saw machine , close circuit ba set , generator set ( 1 kv ) , chemical detector , multipurpose launcher ( rope & ladder and inflatable life jackets / buoy throwing gun with accessories ) , interceptor pressure test kit , trussed type 10 . 5 meters triple extension fire ladders . , low pressure direct breathing air compressor ( portable type )