How to make door lock spring by spring forming machine

The spring forming machine can produce door lock springs.  Although this part is small, it is closely related to each of our lives. Without this door lock spring, none of us would be able to enter the door or return home.  It can be seen how important this part is to our daily life.Our YLSK-20 Spring forming machine is expecially good for producing this part . YLSK-20 is price friendly machine with reasonable machine structure . Iit is hot sale spring forming machine selling model in the foreign trade market .