Hangzhou Vast Precision Technology for customers to improve the carbon fibre composite materials are mainly carbon fibre sleeve and carbon fibre winding, mainly used in high-speed rotating machinery and high-speed motors, especially in the application of high-speed motor rotor to ensure that there will be no loosening between the permanent magnets and rotor, there is a certain amount of pre-tensioning of permanent magnets to compensate for the centrifugal force of the deformation generated by the high-speed rotation. The main advantages of carbon fibre composites relative to metal materials more obvious mechanical performance advantages, thin and light structure, non-magnetic, reduce motor eddy current loss.