This series of product specifications, product quality and meet EU environmental standards (products with SGS environmental reports), the conventional spot size with 305MM, 400MM and other width and thickness are produced from 0.1MM-1.5MM thickness tolerances -0.02 within the conventional case can be divided into S, TS, H, 1/2H, EH, SH, and other states. Its flexibility, corrosion resistance and other characteristics of corrosion-free weaker than the C5210, but the reliability is higher than normal copper alloy, used for electronic, electrical switches and terminals and vibration film.