▎ 摘　　要

NOVELTY - Use of reduced graphene oxide in electromagnetic wave absorption-reflecting material, is claimed. The reduced graphene oxide is prepared by heating and reducing graphene oxide at 140-1500 degrees C for 1-24 hours. USE - Use of reduced graphene oxide in electromagnetic wave absorption-reflecting material (claimed). ADVANTAGE - The reduced graphene oxide produces electromagnetic wave absorbing material economically and with high efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing an electromagnetic wave absorbing-reflecting material which involves preparing reduced graphene oxide and subjecting to electromagnetic wave irradiation treatment with electromagnetic wave frequency of 2450 MHz or 915 MHz, power of 100W-100kW for 5 seconds or more.