This is applied to Auto parts, Hardware, electrical appliances and Mechanical equipment, it is made by CNC to ensure its accuracy. And the material used are Carbon steel wire, Alloy wire and stainless steel etc, the wire diameter is between 0.2mm and 20mm.

Compression spring (Compressionspringgs) provides resistance against external pressure. The compression spring is usually a wire wound coil and a fixed wire diameter. The use of a compression spring more open coil external load pressure (such as gravity pressing wheel, or the body pressure in the mattress) power supply resistance. That is, they pushed back against external pressure. The compression spring is usually a wire wound coil and a fixed wire diameter. In addition, there is a conical spring, or cone and linear combination of spring. Depending on the field of application, the compression spring can be used to resist pressure and/or stored energy. Round wire is the most commonly used in compression springs, but also has a square, rectangular and special shape of the wire made of compressed spring.