Graphene is a two-dimensional crystal. Ordinary graphite is formed by stacking planar carbon atom layers arranged in a honeycomb shape. The interlayer force of graphite is weak, and it is easy to peel off each other to form graphite flakes. When the graphite flake is peeled off into a single layer, this single layer with only one carbon atom thickness is graphene. The latest discovery of graphene is the most effective way to prevent corrosion. Commonly used polymer coatings are easy to be scratched, which reduces the protective performance; Graphene, as a protective film, significantly delays the corrosion rate of metals, making it stronger and more resistant to damage. Graphene is not only a new star in the electronics industry, but also has an infinite future in traditional industries. Its application direction: marine corrosion protection, metal corrosion protection, heavy corrosion protection and other fields. Graphene has good thermal and electrical conductivity. The flexible graphene heat dissipation film developed and produced by graphene can help existing laptops, smart phones and LED display screens. Graphene can greatly improve the heat dissipation performance. The stable lattice structure of graphene makes carbon atoms have excellent conductivity. When electrons in graphene move in orbit, they will not be scattered due to lattice defects or the introduction of foreign atoms. Because of the strong interatomic force, even if the surrounding carbon atoms collide at room temperature, the interference of electrons in graphene is very small. Graphene is the strongest substance known to mankind, harder than diamond and stronger than the best steel in the world 100 times. Before the graphene sample particles began to crack, the maximum pressure they could bear per 100 nm actually reached about 2.9 micro-newtons. According to the calculation of scientists, this result is equivalent to applying a pressure of 55 Newton to break the graphene with a length of 1 m. If the packaging bag is made of graphene, it can bear about two tons of items.