1. 镍含量多少最好?一:牌号n4纯镍/ni201镍棒/n6镍带/ni200镍板/nickel200/nickel201/2.4068/2.4066/n02201n02200/n4(ni201) / n6(ni200)镍板纯镍二:化学成分:Ni%=99.5%