1,OEM/ODM spring clip,steel sheet 2,diffrent surface treatment 3,Coating with ... steel sheet/metal spring/spring clip or compression coil spring can be customized. spring roll,spring loaded in,torsion wire spring,slinky spring,gas spring arm,spring plunger,spring hose,diaphragm spring ... zinc plating, nickel plating, chrome plating, powder coatingo stainess steel wire OEM/ODM spring clip compression coil ...