Supply of Special Heliborne Operation Structure Of 4M X 4M X 22M Iron Girder Slithering Rope Polyester Aramid Or Equivalent Dia 12Mm Wkg Ld Min 700Kgs And Tenacity Min700kv Landing Pad Size 6M X 4M X 7Cm Foarm Material And Waterproof Slithering Gloves Material Canvas And Leather Seat Harness And Carabineers