Skateboards are extreme sports history originator the skateboard project, many extreme sports are the skateboard project extension to. In the end of the 60's in the end of 1950s, the movement of the movement of the movement of the surf, which has now become the most "cool" movement on the earth. The techniques of the slide include: AerialL The (on the slider), Invert The (on the U platform), Ollie The (with a board jump), these techniques can be said to be in addition to the most important slide plate movement. Two important INTERNATIONAL OF WORLD COMPANIES SKATEBOARD (ASSOCIATION) and CUP SKATEBOARDING IASC (WCS) in the world.