Graphite
Natural graphite is a crystalline form of carbon and is found in the form of flakes in metamorphic rock. Graphite exhibits high heat resistance as well as very good electrical and thermal conductivity. The main application of flake graphite is the production of refractory products. This substance is used in the following products: refractories and bricks, fillers, modeling compounds, lubricants and greases, coating products and polymers.