... ,top quality 4)free samples . brush holder for DC electrical machineDetails description:Carbon brushes have been widely used as a ... sliding contact for current transmission in many electrical equipment . Graphite Part is formed for use in a ... in our products, please contact us. Haimen Zhengda Carbon Products CO.,LTD.Ruifeng Industry Zone,Zhengyu Village,Haimen City,Nantong,Jiangsu,China ...