... .ISO9001:2008,ROHs metal stamping AA battery contact springs for PCB 1. Available Material: Phosphor bronze , Iron, cooper, tinplate ... according to customer's drawing.5. Technic is stamping6. Finish: Tin plated steel, mild steel, Nickel plating (for soldering) or ... can provide control plan,showing processing and inspection tooling; 4.Quality control: In house,coming inspection,first off,spotcheck in ...