▎ 摘　　要

NOVELTY - A graphene based film (GBF) is manufactured by providing graphene oxide sheets in aqueous suspension; providing a substrate; providing suspension on substrate; heating suspension on substrate to form graphene based film by self assembly; detaching graphene based film from substrate; performing thermal annealing of graphene based film at 2800-3300 degrees C in inert ambient; and pressing graphene based film at pressure of 50-300 MPa. USE - Manufacture of graphene based film (GBF) (claimed) for heat dissipation and heat spreading films. ADVANTAGE - Graphene film has high thermal conductivity.