With conventional spring slightly difference is spring itself is irregular, with the Angle of the bend and a large number of complex design, and manufacture craft is also relatively have a requirement, equipment is also more requirements, generally is the computer machine winding, because of the winding Angle, bending, so the production speed is slow, because of its complexity, shaped spring production and processing, often can represent a company's technology level.
Common springs are divided into: compression spring, stretching spring, torsion spring. Heterotype spring, which mainly consists of complex space Angle, irregular bend, etc.
