It is a kind of graphite product obtained by special chemical treatment or electrochemical treatment using high-quality large flake graphite as raw material. It can expand instantaneously when exposed to high temperature, and the expansion ratio can reach 150-400 times, changing from a flake shape to a worm shape, resulting in a loose structure. Porous and curved, with large specific surface, high specific surface energy, strong adsorption force, and the worm-like graphite can be interlocked by itself. This increases its flexibility, resilience and workability. It is a high-quality material for the production of flexible graphite sheets and various seals.

It can also be used as lubricant additives, heat preservation additives in metallurgical industry, fire-fighting additives, and low-temperature expandable graphite flame retardant materials for battery adsorption materials.