Carbon fiber staple fibers are short fibers obtained by cutting continuous carbon fiber filaments into specified lengths. It has many excellent characteristics, such as high carbon content, excellent mechanical properties, good chemical stability, excellent electrical properties, corrosion resistance, fatigue resistance, high temperature resistance, small expansion coefficient, light weight, low density, high specific strength and specific modulus (much higher than steel and aluminum alloys), etc. Its application fields are very wide, including but not limited to the following aspects: - **Reinforced modified plastics**: It is used for the reinforcement and modification of plastics such as nylon (PA), polypropylene (PP), polycarbonate (PC), phenolic (PF), polytetrafluoroethylene (PTFE), polyimide (PI), etc. - **Construction field**: Such as carbon fiber reinforced cement, conductive coatings, anti-static flooring, etc. - **Electric heating field**: It is used for conductive paper, electric heating plates, conductive surface felts, needled felts, conductive mats, etc. - **Shielding materials**: It can be used to manufacture shielding smoke, shielding curtain walls, etc. - **Heat insulation and insulation materials**: It is used for carbon fiber reinforced refractory billets and bricks, carbon fiber reinforced ceramics, etc. - **New energy field**: It is applied in aspects such as wind power generation, friction materials, electrodes of fuel cells, etc. - **Aerospace field**: It can be used as a candidate material for aerospace, such as for manufacturing aircraft wings, aircraft brake pads, rocket nozzle throat liners, missiles and other components on space shuttles, and using its dimensional stability to make platforms supporting cameras on reconnaissance satellites, etc. - **Automotive field**: It is used for manufacturing automotive leaf springs, drive shafts and other components. - **Sports, leisure and daily necessities**: Common ones include golf clubs, fishing gear, tennis rackets, badminton rackets, arrow shafts, bicycles, rowing boats, etc. The performance and application of carbon fiber staple fibers depend on its specific specifications, surface treatment and other factors. In actual use, the appropriate carbon fiber staple fiber products need to be selected according to different needs and application scenarios. At the same time, with the continuous advancement of technology, its application fields may further expand.