Toy car magic spring carbon fiber spring extension compression spring
Compression spring is the spiral spring born to the pressure .The cross section of the material almost is round. Generally ,the
pitch of the compression spring are the same .The shape of the compression are cylindrical, conical, convex and concave and a few
non circular shape. Compression spring have gap between the ring and the ring. It stored energy of deformation when the spring is
subjected to external load force.