Considering that the fender generates a very lange impact force due to colision when the ship berths with the dock or between ships; When a ship is moored at a dock, due to the combined effects of sea wind, waves, and water level fluctuations,the ship will colide, squeeze, and rub against the dock, resulting in a complex and long-lasting three-dimensional force mechanism. Its xting force often causes damage to the dock structure and ships. Therefore, selecting appropriate anti-collision buffer media, absorbing collision kinetic energy, and reducing mutual reaction forces between ships and docks or between ships is undoubtedly very important for protecting both docks and ships. Greenward string guard material is a polymer material that lies between rubber and plastic. With its flexibility and colision resistance, it can be used not only for the skin of fenders, duckweed, collision boats,fiberglass boats, and other facilities, but also for making or repairing slides and other riding facilities in water parks.