The nickel strip purity of Baoji rare is between 99.5% and 99.95%. The whole production is vacuum melting, hot rolling, cold rolling, precision rolling, slitting and annealing. The thickness of nickel strip is from 0.03mm to 0.8mm, width is from 2mm to 250mm. There are four hardness for nickel strip, it is M (soft state), 1/4 H (one quarter hard), 1/2H (semi hard), 3/4 H (three quarter hard), H (full hard). Battery used nickel strip prefer to Baoji Rare. www.bj-alloy.com, email@example.com.