1..ISO-001-2000 2.graphite bearing, carbon seal, graphite thrust bearing 3.mini: 50pcs 4.resined impregnation, antimony ... ,et .ISO-001-2000 2.graphite bearing, carbon seal ... , graphite thrust bearing 3.mini: 50pcs 4.resined impregnation, antimony,etcthrust bearing, graphite bearing,thrust bearing. which ...