What material is electric heating film floor heating made of?

Currently, most geothermal films are believed to be made of graphene. The main ones are graphene and carbon fiber. The heating cables are made of metal and have been eliminated. heat conversion is low, which consumes electricity. Most geothermal graphene films are made of carbon fiber. They are imported from South Korea and will no longer be used after ten or eight years. It is therefore recommended not to buy Korean films. conductive ink and others. As for whether there is graphene or not, what matters is whether the heating effect is good. Generally speaking, the safety of electric heating mulch film is not a problem. It is enough to choose reliable brands and go to the building materials market to see which ones have after-sales guarantees.