pneumatic fender is the advanced anti-collision device for marine application in the world today. It uses compressed air as medium to absorb the impact energy when ship-to-ship contact(STS) and ship-to-berthing(STB). Comparing rubber fender, it has the following advantages: more energy absorption, less reversimpact on ships , less weight, easy installaion, softer and economical, etc. So, pneumatic rubber fenders are widely used by large tankers, LPG vessels, ocean platforms, large docks, harbor and wharfs.