▎ 摘　　要

NOVELTY - A graphene sheet (10) is obtained by peeling one layer of a layered structure of natural graphite. USE - Graphene sheet is used as raw material for forming graphene-sheet formed products (claimed) such as carbon tube. ADVANTAGE - The graphene sheet provides large sized carbon nanotube which does not have health impairment on humans. DESCRIPTION OF DRAWING(S) - The drawing shows the partial explanatory diagram of the atomic structure of graphene sheet. (Drawing includes non-English language text) Graphene sheet (10)