and the industry scale continues to expand.

graphene film is a large-area single crystal or polycrystalline graphene film material prepared by spin coating, spray coating, chemical vapor deposition and other processes. graphene film has good mechanical properties, flexibility, thermal conductivity, electrical conductivity, electron mobility, light transmittance and other characteristics, and can be widely used in smartphones, tablets, computers, display panels, wearable smart devices, and medical equipment , precision instruments, power batteries and other…