1, uses import special-purpose airship cotton material 0.9T1000D/PVC completely, gas tightness, the resistance to wear is extremely good, the service life is long. 2, use imports the air valve, convenient, is safe, is reliable. the 3, all cementation spots use the import glue water cementation completely, the racking strength as well as thermostable, bear performance and so on hydrolisis, anti-ultraviolet ray greatly to surpass the domestically produced glue water, even if under the sunlight insolation, the airship connection spot reliable performance obtains the full guarantee. 4, imported material color fastness is high, cloth cover color calendar long like new, the import special-purpose wear-resisting bi-color protects the side, causes the hull to be durable. applicable scope: Aquatic turbulent current drift movement, aquatic rescue, marine lifesaving and so on