Material Features: BEIOU products were made mainly with Toray T800 carbon fiber, whose tensile strength is 500kgf/mm2, 4900MPa, the tensile modulus is 24ton/mm2, 230GPa, the elongation is 2.1, and the density is 1.8g/cm3. For the part of Bottom Bracket, we overlap T800 and T1000 carbon fiber to increases the strength and the rigidity, which makes it work in great safety and speed up quickly in dancing. The rear triangle part was made with Mitsubishi high carbon fiber, whose tensile strength is 450kgf/mm2, 4410MPa, the tensile modulus is 40ton/mm2, 395GPa, the elongation is 1.1, and the density is 1.82g/cm3.