We have best quality Rolling Shutter Spring used in Shutter. The quality of the spring is good and it does not corrode easily. We keep in mind that the spring material is such that itdoes not break for a very long duration.
The most common form is a cylindrical, helical spring with a constant pitch. This type of spring is a round wire spooled into a cylindrical form. It is commonly seen in vehicle suspension systems, engine valves, dampers, and so on.