This reduced graphene oxide powder, designated G1000, is developed from graphite oxide through thermal expansion and subsequent carbonization reduction, effectively removing oxygen-containing functional groups and repairing structural defects. The resulting material exhibits high electrical and thermal conductivity, high purity, and a high specific surface area, making it suitable for advanced research applications. Common use scenarios include electrochemical energy storage (such as supercapacitors and lithium batteries), conductive inks, antistatic and electromagnetic protective materials, composites, thermal management, anticorrosive coatings, catalyst and drug carriers, sensors, and adsorption materials. Its combination of structural integrity and high surface activity supports both fundamental studies and applied development in two-dimensional carbon materials.