Sports equipment such as poles, golf clubs, tennis rackets, bicycles, snowboards, kayaks, etc. that rely on human labor to make their movements, people hope that the lighter the better; Even equipment that relies on non human power to make it move, such as racing cars, sailboats, motorboats, etc., should be lightweight under the same conditions. Carbon fiber composite materials have incomparable advantages in this regard, with a density of 1.76-1.80 g/cm3. The resulting composite material has a density of 1.50-1.60 g/cm3, while steel has a density of approximately 7.87 g/cm3, aluminum 2.7 g/cm3, and titanium 4.5 g/cm3. Obviously, carbon fiber composite materials are much lighter than metal materials.