GSJ graphite sheet is a new type of thermal conductive material for electronic products that conducts heat in both vertical and horizontal directions simultaneously; the definition of the vertical thermal conductivity coefficient of the graphite sheet is the amount of heat transferred by a 1mm thick thermal conductive graphite sheet in one hour per square meter under stable conditions. But what does the horizontal thermal conductivity coefficient of GSJ graphite sheet mean? The horizontal thermal conductivity coefficient of graphite refers to the heat diffusion type of heat conduction of graphite on the same horizontal plane, and the graphite sheet is a layered structure composed of carbon molecules. It is this sheet-like structure that makes the horizontal heat diffusion of graphite reach 800~1000w/m-k. The horizontal thermal conductivity of graphite sheet is most suitable for electronic components with small heat sources but high temperatures.