产品代码--- G D A E B 4弦(价格:147) RB35---35 55 75 95 RB40---40 60 80 100 RB45---45 65 85 105 RB50---50 70 90 110 5弦(价格:209) RB40-5---40 60 80 100 125 RB45-5---45 65 85 105 130