... steel, piano steel, SUS, alloy steel, iron, plat 1.Battery spring with wire diameter from 0.08mm up to 3 ... iron, plated steel etc3.widely used in chargerrecorder,flashlight,calculator,battery charger,toy and other electric areas4.Packing with plastic bags, inner ... springs and wire form, even punch fitting of hardwareUsage:auto,motorcycle,industry,ariculture,mine,furniture,elevator and so onWide range ...