graphite piece,graphite plate, graphite blade,carbon sheet which are used for vacuum pumps,oil pumps,best quality and price. graphite piece,graphite plate, graphite blade,carbon sheet which are used for vacuum pumps,oil pumps,best quality and price. also whcih have many kinds of different sizes, wear durable, and high temperature,the qulity is similar to Ek60 from Germany. we have enjoyed high ...