... 1 Material : Titanium, Carbon steel, Silver, Nylon, Cr5, Iron, Nickel plated carbon line, Nickel plated steel wire harp, Flat ... artware etc.4 Packaging:Inner plastic bag, outer carton box, and we can also pack products according to your requirements.5Our ... & 502S(Spring coiling machine, Pressure spring machine, CNC computer spring omnipotent machine, grinding machine,automatic spring machine etc.). ...