Cupronickel strips/coils are continuous thin coiled materials made from a zinc white copper base through multi-pass cold rolling and bright annealing processes. Combining excellent corrosion resistance, a stable silver-white metallic appearance, moderate strength and elasticity, and good non-magnetic properties, they serve as core foundational materials for EMI shields/connectors in electronics and communications (5G base stations/smartphones), precision instrument components, and high-end eyeglass frames and decorative etching applications.