As the soul part of a bicycle, the material used for the frame is very important. Titanium alloy's high strength, low density, excellent fatigue resistance and corrosion resistance make the titanium alloy frame not only strong and durable, but also very light. Titanium alloy has strong fatigue resistance and corrosion resistance, and its service life is five times longer than that of aluminum frames, which can basically be regarded as semi-permanent frames.