EXA heating film，50 cm width,

Heating film surface is special polyester film material (PET), black chalk line in the film is the conductive ink, conductive ink is the core of electric heating parts, is equivalent of a lot of shunt resistance, will be heating by electricity.The current carrying metal strip in electrothermal membrane on both sides, is used to connect (resistance) conductive ink, the main material of strip are made of copper and silver.After charge, the conductive ink can release far