... performance 3.Good quality 4.Best after sell service.. Carbon vane,used in fuel pump,vacuum pump,becker pump,and ... material6. We have Natural graphite grade; Electro graphite grade; Resin bonded graphite grade; Copper graphite grade; Silver graphite grade and ... holder and the industrial brush ,see the photos,HuaLian Carbon Industry Co,.Ltd Baochang Industrial Zone,Haimen226151,Jiangsu Province,China ...