bronze bushng 1,material:bronze 2,widely used in auto parts 3,good quality,competitive price 4,ISO9001 certificate specification:Bronze Standard:ZCuSn5Pb5Zn5(C83600), ZCuSn10P1 ... , ZCuSn10Zn2(C90500), ZCuSn7P0.2, ZCuSn6Zn6Pb3, ZCuA19Fe4(C61900), ZCuA19Fe4Ni4Mn2(C95800), ZcuA11OFe3Mn2 ...