One is that graphene and the base material are matched, directly formed on the base material, and then sprayed after multiple processes, and then dried into a film. The result of this method is generally black or gray-black.
One is a single layer of carbon atoms obtained by chemical vapor deposition, which is generally a transparent graphene heating film, and the production cost is much higher.
Now the common graphene heating film on the market is generally made by the first method, and the general color is gray-black.
