... produce various kinds of carbon brush such as: electrical power tool and home appliance carbon brush, micro motor carbon brush,etc ... .5/12.5BE570R,SB2-570,SBE500R,SBE630RHaimen Zhengda Carbon Products CO.,LTD.Ruifeng Industry Zone,Zhengyu Village,Haimen City,Nantong,Jiangsu,China ...