▎ 摘　　要

NOVELTY - Graphene composite comprises a graphene layer and a support layer located on one surface of the graphene layer. USE - The composite is useful for electron microscopic observation. ADVANTAGE - The composite allows an accurate and clear observation of a specimen to be observed, and accurately and clearly observes an insulating bio specimen, and even a specimen that cannot be mounted on a sole graphene layer is stably mounted on the graphene composite due to the chemical transparency of graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing an electron microscope sample substrate, involving forming a crystalline sample on the other side of the graphene layer of the composite.