The characteristics of carbon fiber are: 1. Good physical properties: Carbon fiber materials have higher density and strength. 2. Strong chemical properties: good durability, strong corrosion resistance and strong flexibility. 3. Flexible construction: Carbon fiber materials have strong adaptability and obvious construction flexibility. As a strategic new material with excellent performance, carbon fiber has a density less than 1\u002F4 of steel but a strength that is 5-7 times that of steel. Compared with aluminum alloy structural parts, the weight reduction effect of carbon fiber composite materials can reach 20%-40%. Compared with steel metal parts, the weight reduction effect of carbon fiber composite materials can reach 60%-80%.