Flexible Graphite preform Plate (Prefabricated Plate) A flexible graphite preform plate is a graphite preform plate formed by rolling with an expanded graphite worm as base material. It has good conductivity and mechanical properties, strong corrosion resistance, is lightweight, and has a long service life The DOCBOND Flexible Graphite preform plate can be customized according to the size of the client s requirements. The client can produce the graphite bipolar plate of the right size only by molding