Tender For supply of bty replacement of flymaster altivariometer old version , installation of screen gd and cover case on flymaster altivariometer new version , comn lead replacement of comn helmet , replacement of spare batteries for baofeng uvr hand held radio sets , repair and maint of helmets to incl foam replacement, strap replacement, buckle replacement etc , repair and maint of safety gear to incl knee pads, elbow gd etc , provn of cover for emergency rescue parachutes , protection case for motion camera with 4k resolution insta 360 , safety bag for hand held camcorder